Hi Marc, I have received the ring! It is very well made and gorgeous!! Love the sapphire from you!! Thank you so much for the time and patience!! I would have love it to be bigger, but with the budget I guess this is probably one that I should be glad. Still I am very happy with the overall colour and clarity of the gemstone!! It does exhibit different saturation under different lighting. Most importantly the cut is great!! Attached a few pics taken by mobile phone under shelter in daylight. Thank you once again! Will definitely recommend you to any of my peers if they need gemstones purchases! Jordan W. of Singapore (bought loose sapphire and custom ring)
Marc, The aquamarine stone arrived today. It is truly an exceptional stone. As a collector for the last 14 years, I never thought I would be able to get to own an aqua with such saturation that I could afford. Again, it is a pleasure doing business with you. Best regards, Ted K of Totowna NJ (bought super gem aquamarine stone)
Marc - thank you very much. I cannot tell you how much it means to me for you to go to the effort. Tomorrow is my girlfriend's birthday, and I hope to give it to her at lunch - a special lunch, of course. She loves stones of all kinds, precious and semi-precious. I see stones and I think they're nice, and pretty. But she sees something else, something connected to the Earth, to history, and all things like that. She can stare at the stone for hours. Which, hopefully, she'll do it tomorrow at lunch. Thank you once again for saving me in the last moment. Royston T. of canoga park, CA (bought loose blue sapphire)
No problem at all Marc, These things happen. I really can't speak highly enough of the service you have provided considering the distance. All the best. Jake P of London UK (bought custom green beryl ring)
Hi Marc, Thanks very much for all your help. Finally managed to get a good look at the stone, whilst not perfect, I do love the imperfections! The little swirl in the middle - great stuff. Not sure if there's anything required from my end to complete the sale, would like to get to this to the goldsmiths to be set. Once again, thanks so much - it'll certainly make one girl very happy. Regards, Mike W from Singapore (bought blue sapphire gemstone)
Thank you for everything Marc. I received the FedEx this morning, the stone is beautiful. It's exactly what I wanted for my wife's birthday! All the numbers look good to me. Again I am very impressed with your gems and your customer service. My daughter is already thinking about what she might like for her 16th birthday! All the best, Dave A from Lafayette LA (bought aquamarine studs)
Hi Marc, Thank you, got it. She loves it, and said yes!:) Cheers, Jadel M from Vancouver Canada (bought topaz ring)
Hey Marc Merry Christmas. Just want to thank you for the timely delivery. Lisa adores the earrings and ring and couldn't be happier.They both display quality and beauty, needless to say I'm happy as well. Thank You Ryan S from Peoria IL (bought various custom jewelry)
Hi Marc, I just got home from work and my husband said, Come look. On the window sill in its box was the Blue Zircon. It had just arrived. The invoice and certificate arrived yesterday. How absolutely beautiful, it’s all that I was looking for!!! I love the color and the cut. Is this a step cut? Anyway, I just love it and so does my husband. I really appreciate your expertise and your patience in helping me make this choice. I did look at other sites, but something told me to stick with you and I’m so happy that I did. P.S. My husband, Gary also said that if you ever think of renaming your company, his suggestion is STUNNING GEMS! I second that and will highly recommend AFRICAGEMS to others. All the best to you and your company. Brenda H. of Boston MA (bought loose blue zircon)
Marc, Received the spinel today and was very impressed. Although I do own some spinel, nothing in my collection has the eye-popping color of this stone. I say this knowing that pink isn't necessarily my first choice as a color for a colored gemstone. It will make a nice addition to my collection. Ted K. of Pasadena CA (bought loose pink spinel)
I received my ring today and am absolutely delighted with the colour of the stone and the sizing is nearly as wonderful. Thank you so very much! Sonja C. of Charlotte NC (bought loose aquamarine)
Marc, the ring is amazing! Thank you for everything. The stone is truly incredible. Take care and I will certainly share your information whenever I get the opportunity. Mike B of Detroit MI (bought custom aquamarine ring)
Thank you very much for the work you put into our order, I gotta tell you I've had a blast playing around with the different features of your website, designing different rings and such. Your website is merchandised pretty good. Tracie loves the rings the ruby has got a real good glow out in the sunlight and the spinel looks wonderful in its mount. The only real problem is the chain on the necklace it came terribly tangled and me thinks we just made it worse but no biggie we had an extra chain. Overall very pleased with order. Thanks J. Sitton of Baton Rouge LA (bought 2 custom rings)
Yellow sapphire received. I must say I expected the comment about it being very diamond looking to be a bit of exaggeration that tends to occur with sapphire, but it is exactly that, yet unique in its brilliance and flash. I am very pleased with the stone and moved to send a compliment. John H of Indiana PA (bought yellow sapphire loose gem)
My ring arrived yesterday. It is beautiful. I've been running around the house looking for different light sources to view the colour change under. Thank you so much for your help and patience. I hope I have the opportunity to purchase another item from you again sometime. Jacquie A. of Vancover CA (bought custom alexandrite ring)
Hi Marc, My little diamond has just arrived safely by FedEx and it looks beautiful, thank you so much. It's as white as I hoped it would be and the bow tie isn't that obvious because of the size of the stone, I imagine. I'm now going to have the pleasure of thinking up a setting for him. Thank you very much, I'm delighted. I think I'm going to have to keep looking in your discounted stones section! Best wishes, Lynn M of Sufflock UK (bought loose diamond)
Hi Marc, I just wanted to thank you so much for everything you've done for us with the whole ring processes. I proposed to my girlfriend on Friday, and she beyond loved the ring. Everything came out perfectly, the sapphire is stunning, and the ring was set beautifully. Thanks again! Sincerely, Lukasz S. of Chicago IL (bought loose blue sapphire & custom ring)
Hi Marc, My gem has finally arrived and it is fabulous! The colour is exactly what I had hoped it would be.... Resembling sunset and lotus flower. I inspected the packaging and nothing appears to have been tampered with... I was getting concerned but looks like all is ok. My plan is to take the pad to a local gemologist to verify and then on to Designing a ring setting. This is a retirement gift to myself .... My last day at work is just before Christmas...so hopefully the ring will be ready by then. When it's done I will send you some pictures. Thank you for all your support thru this crazy process...although I've not met you I feel like I've known you for some time. I greatly appreciate your awesome Communication with me. I love the gem! Thank you Daria L of Ontario CA (bought loose padparadscha sapphire)
Marc, my ring has just arrived. I am over the moon. It is so beautiful. Thank you and your colleagues so very much. I am hoping it will bring me luck over the coming months as I am off the hospital this afternoon to find out about my operation for breast cancer. I'm sure it will help to protect me. Thank you, once again, for your brilliant contribution to my life. Warm regards, Shoosh S. of Birmingham UK (bought custom pink sapphire ring)
Hi Marc, This is Amazing! I've never experienced such fast shipping! I was noticed on a Wednesday that my items had been shipped, and on already on the following Monday I had the parcel at home! From US to Sweden in Europe! The Tanzanites I ordered are perfectly just what I requested! Thank you very much Marc! This means a lot for me! I will for sure recommend you further and come back for more orders! Wish you a nice day! Best regards, Queenie H. of Stockholm Sweden (bought loose tanzanites)
Hi Marc, I received my ring today. It fits perfectly, the color of the topaz is beautiful! I almost wish I had chosen a larger stone. Thank you, Mary A. of Modesto CA (bought a swiss blue topaz gold ring)
Cardy was AMAZING! It took 45 minutes. Everyone warned me that I would be without my ring for weeks, and you helped me get away from that. You have been extremely responsive and fantastic for all of this. I really appreciate you, and DEFINITELY would recommend you to anyone I can. You are very much running your business very well. Not to mention, my ring is beautiful!!! Exactly what I wanted. Katie F. of San Francisco CA (bought alexandrite engagement ring)
Hi Marc, I got my ring yesterday.. love it! Looks great! I like the way the prongs are done and the ruby is beautiful! Thanks, Brigitte L. (bought Chatham Ruby and AfricaGems made the ring)
Dear Marc, I have a confession to make. I lost my original engagement ring, a Stuller setting for an asscher cut and a cushion Chatham Sapphire. I wanted a ring that looked close to that original one. You made it happen! Actually, your mil grain work and stone setting was better than the original which was off centered. Thank you. Regards, Christine Y (bought Chatham Blue Sapphire and we made the ring)
Marc, Received the stone. It’s beautiful! We now have a new place to order stones from and feel confident in the quality! Thank You, Clayton M. (bought loose pink tourmaline gem)
Hi Marc, Thank you, I received the stone on Wednesday as you indicated. I appreciate the quick turn around time. Pleasure doing business with you and your site will be one of my top gem shopping sites after this business experience. I did enjoy the extra haribo snack. Thank you once again, Danny C. (bought a round 1 carat loose blue sapphire for engagement ring)
First diamonds are in the mail. Had gone away for a week and nobody at home dropped the mail in the box. Apologies. Picked up my pendant with the new ones and they look beautiful. My next purchase will be emeralds...Thanks, Marc. Li B (bought and exchanged enhanced blue diamonds)
Hi Marc, The bracelet arrived this morning and as you said it looks stunning and I know she will love it. Could you please send a Cert of Authenticity (Similar to the one sent for the 2 loose stones) and a full invoice for the total amount for insurance purposes at my end. If you need to send copies by post please send to, Alan H. (bought a tanzanite bracelet)
Hi Marc, I just wanted to say how delighted I was to receive the Tanzanite bracelet for Christmas. I understand from my husband, Alan, that you were extremely helpful with the making of the bracelet, it sounds like it caused a few problems at times, not least due to Alans bank! I just wanted to let you know that I am thrilled with the bracelet, the stones are beautiful and it looks lovely, so thank you for all your help! I hope you and your family had a good Christmas and very best wishes for a healthy, happy New Year. Kind regards, Sue H. (husband bought tanzanite bracelet)
Hi Marc, I just received the opal and it is gorgeous, as always I am very pleased with my purchase. I was looking at different pendants, it's a Christmas present for my daughter. I saw a multi-gem one that I liked. Item pendant 650870s. Should I order it on line or could you just do it. Also will you extend the 25 off discount on that item? Again, thanks for all your help,Terese U. (bought stunning loose black opal gem)
Good Afternoon Marc, Thank you so much selling me this amazing stone, I can assure you it will be well loved. I thought you might enjoy how much people love the blue spinel you sold me. I posted a few photos on PS last night and will likely post more in the next few days. Again thank you, I really do love it and I am wearing it even as I type this! Katherine S. (bought large blue spinel gemstone)
My wifes stone got here this morning. She was in awe of how gorgeous a stone it was. It is replacing a stone in a ring that was stolen and in our opinion we think it is even nicer than the stone it replaced. Once set we will be whole again lol. Again thank you for having the stone available and for you call concerning shipping. We will certainly recommend you to any of our friends who are looking for QUALITY stones. Doc Mc (bought loose oval padparadscha gemstone)
Hi Marc- just wanted to thank you for finding the 4.4mm size for me, and also for the quick refund on the 4mm. So glad I found your website! Cristy S. (bought loose white sapphires)
Hi Marc, I just want to say thank you so much! The pendant is so beautiful..well done! The bale also fits perfectly. I have a question about the negative ions created by tourmaline..now can one just wear it to experience the negative ions or does there have to be pressure applied to release the negative ions? I'm just curious. Thank you Dawn T (bought custom tourmaline pendant)
Marc, The ring arrrived yesterday and it is gorgeous! Thank you so much for creating the perfect piece with this sapphire. This ring will become an heirloom. Henry G (bought custom spessartite garnet ring)
Marc, Thank you so much! You may have thought it took longer than expected but we thought it was quite expedient. Thank you for continually confirming for us our decision to purchase from Africa Gems. This has been a wonderful transaction. We'll be here all day so as soon as it arrives I'll let you know. Happy Valentine's Day, Jennefer P of San Deigo CA (bought custom emerald ring & band)
I'll put them in the mail today. I want you to know that I really appreciate how amenable you have been. Your A+ rating is exactly right. I will continue to do business with you when I have other needs. My sister has also been checking out the site for sapphires based on the excellent service I received. Thanks again, Jim W.of Bangor MI (bought loose emeralds)
Will do! I'm in Denver on business until Saturday. I'll get it shipped out ASAP upon my return - next Monday most likely. Thank you for all of your help. Especially your guarantee and return policy. Made purchasing the gem online much more comfortable. Ironically, my jeweler also loosely knew your father and had a very good opinion of him. Thanks again Marc! Doug M from Camarillo CA (bought loose blue sapphire)
Marc, Your fantastic customer service makes it easy to support AfricaGems! Looking forward to surprising my wife with the Onyx ring. Regards, Michael S. from Boise ID (bought onyx diamond pendant)
Hi Marc, So far I'm very happy with the sapphire I purchased. My plan is to mount it in a tanzanite ring that I have (the tanzanite is very light in color and I've never been happy with it which is a surprise since it's also a Levian purchase). The setting has two sides with the stone suspended in between. I think the light will catch it magnificently! Thanks for checking on my order! Rita K. from Garland TX (bought Chatham emerald stone)
Hi Marc, Just to let you know that the stone was delivered today. Pitty it is dark now so can not see the true stae, but I am happy to see it here with the certs!I hope to do business with you again in the future! Thank you for you help, patience, Regards Wim D. of Dubai (bought loose oval alexandrite)
the rings have arrived they are absolutely stuning ! i thank you with all my heart and i pay no duties thanks to you THANK YOU VERY MUCH I HAVE NO WORDS TO THANKS !! Mencaglia A of Bucharest Romania (bought two blue topaz diamond rings)
Dear Marc, I just received the four turquoise gemstones that I had ordered. They are beautiful. I am very happy with the quality and will be ordering some more gemstones soon.Thanks Baljinder K. (bought loose turquoise gems)
Marc, I just wanted to let you know that I received the ring today and it’s beautiful, she’s gonna love it! Thank you again for all you’ve done. I was concerned about ordering something liker this over the internet but you’ve made this entire process very easy and your communication with me has been outstanding. Everything was exactly as you described it…perfect! David M. of Atlanta GA (bought custom Alexandrite diamond ring)
Aquamarine Gemstones - AfricaGems is The LEADER in Fine Quality Loose Aquamarine Gems for SALE Best Value Natural Aquamarine Gemstones for The Ultimate in Quality Aquamarines - FREE Shipping
Vivid Color & Super Size Aquamarine Gem in Pear Cut, 24.9 x 10.6 mm, 9.96 caratsThis Genuine Aquamarine Gemstone Displays A Vivid Medium Rich Blue, Excellent Clarity, Cut And Life. A Beautiful Stone In A Very Elegant Shape, Impressive With Tons Of Presence. Perfect For A One Of A Kink Piece, Very Bright And Lively. Note For A Personal Detailed Description Of This Beautiful Gemstone, Including Video, Please Contact Us And It Will Be Quickly Provided To You. Note The Very Facets That Create The Beautiful Sparkle In A Gemstone May Create Optical Illusion White Or Dark/Black Spots And Areas Or Uneven Coloring When A Gemstone Is Photographed. Single Dimension Photographs Can Not Accurately Display The True Beauty And Life In A Gemstone. Gemstones Must Be Seen In Person To Be Appreciated. Note: Be Sure To Select The Right Gemstone/Diamond By Millimeter Size Only. Selecting Your Gemstone/Diamond By Carat Weight Is Not Accurate. The Best Way To Select The Right Size Gemstone/Diamond Is To Use Our Size Chart ImageOr Consult With A Local Jeweler To Measure Your Setting Or Gemstone. CLICK HERE FOR A SIZE CHART TO PRINT OUT (*Please set your PDF viewer to 100% for accurate results) Please Contact Us If You Have Any Questions.$8,279.00
AfricaGems is The Leader in Finest Quality Aquamarine Gemstones - See Video Why
What is an Aquamarine Gemstones & How Did It Get The Name?
Aquamarine - What do you think of when you hear the word 'Aquamarine?' It is a natural gemstone that can conjure up images of the beautiful blue waters of an Alpine lake or a clear beautiful light blue sky at sunrise. For those into etymology, the word aquamarine comes from the Latin words aqua for water and marine for sea. Aquamarine gemstones can be a pale almost colorless blue or they can be a bluish green or a greenish blue or a light green similar to a light colored emerald or they can be a clear blue similar to a light blue sapphire. In fact, many people believe the best aquamarine is the vivid color of a light blue sapphire. But even the best aquamarine will not have the blue tones of a top quality royal blue sapphire. Aqua just doesn't come in that dark a tone of blue.
Gemstone 'fashions of the day'seem to dictate which color aquamarine is in favor in a particular year. For example recently, natural bluish green uncut aquamarines have become quite popular in multi-strand or torsade style
necklaces, but clear blue polished aquamarine necklaces will always be highly prized.
Aquamarine Belongs to The Beryl Family of Gemstones Aquamarine is a member of the beryl (sometimes referred to as precious beryl) family of gemstones. This gemstone family includes the very coveted emerald, the fairly newly discovered Morganite (discovered in the early 1900s by J.P Morgan), golden (Heliodor) beryl, Goshenite (colorless), Bixbite (very rare red beryl) and green beryl (almost a separate species from emerald as they are usually eye clean and they are a much more pastel light mint green color). It is unlikely that you will find any beryl other than emerald or aquamarine in most jewelry stores. They 'other'beryls are primarily collector gemstones although Morganite has been gaining some popularity recently. In the 1980s when the process for enhancing colorless topaz to make them a medium toned blue was introduced, aquamarine fell out of favor for a time. One will still see more blue topaz jewelry than they will aquamarine jewelry in the average jewelry stores because blue topaz is much less expensive and therefore more affordable to more budgets. That is not to say that aquamarine is not affordable because it is.
Where Can You Buy an Aquamarine Gems?
One of the interesting things about aquamarine is that most jewelry stores don't carry a large selection of fine aquamarine jewelry even though it is a favorite among the high end designers of jewelry. It can be classically cut in an emerald cut but it also lends itself to more modern 'fantasy'cuts you won't see in many other gemstones. Some of the most exquisite high end jewelry designs for necklaces, earrings and rings with blue gemstones is fashioned around aquamarine. Aquamarine is often thought of as a gemstone designer's dream blue gemstone. AfricaGems.com will always have a relatively large selection of aquamarine available to individuals and jewelry designers in part due to Marc's love of the gemstone. Mining Aquamarine Gemstones in Zambia is how the founder of AfricaGems got started in the gemstone business. AfricaGems has always had the best reputation for high quality aquamarine gems and our fine faceted aquamarine gems are all cut to exceptional gemstone standards.
Aquamarine - The History and Lore of This Beautiful Blue Gemstone
Aquamarine gemstones have been used for thousands of years. The first documented use aquamarine dates back to the Greeks between 480 to 300 BC. Some believed that aquamarine came from a mermaids treasure chest. It was also associated with Poseidon, Greek god of the seas and with the Roman god of water (freshwater) and sea 'Neptune. In the 19th century it is believed that astronomers named the planet Neptune because the deep
blue gas clouds that shroud the planet gave those early astronomers the impression that there were oceans on the planet. Since the planet Neptune is the ruling stone for the Zodiac sign of Pisces that makes aquamarine the
birthstone for those born under that sign. The Modern Birthstone list created in 1912 designates aquamarine as the birthstone for March.
Why People Wear Aquamarine Ancient mariners used to wear amulets of aquamarine to protect them from rough seas which were believed to be caused by the wrath of Poseidon. Aquamarine was also believed to render them fearless, protect them from sea sickness and bring them luck. There are those that believe wearing aquamarine will bring a happy marriage, that it symbolizes loyalty and trust and / or that it will give the wearer
foresight or courage or youth or make the wearer smarter. It is supposed to make one more serene, eliminate phobias or fears, cleanse the mind and promote self-expression. For those who believe in the healing powers of gemstones, aquamarine is supposed to help ease arthritis, eye inflammation, sore throats and varicose veins. That's a powerful stone if you are so inclined as to believe in all those attributes.
Geology & Occurences of Aquamarine Gem Stones
Aquamarine and most beryl's occur in geological formations known as pegmatites. They can occur in vugs, also known as pockets, as well as encased by quartz and feldspar. Aquamarine gems are commonly found along with Tourmalines. The traditional producer of aquamarine has been Brazil, but in more recent times Where are aquamarines mined? Aquamarine is mined in Brazil, Africa (Kenya, Mozambique, Nigeria and Tanzania), Pakistan,
Madagascar, Siberia and the United States with Brazil and Africa being the largest producers.. The largest high quality gem crystal ever discovered, in the early 1900's was a 200-kilogram absolute gem quality crystal found in
Brazil. It was so clean that one could read newsprint through it!
Judging Aquamarine Gems - How To Judge Quality of An Aquamarine Gemstone
The best quality aquamarine stone is a beautiful clear calming pure blue color with little to no gray undertones or secondary hue . When considering an faceted aquamarine gemstone, carat weight is one of the least important
considerations. Color tone and cut are without a doubt the most important characteristics to consider. But with aquamarine the old adage of 'the darker the color of the gemstone, the more valuable it is doesn't apply (see
below) 'Tone is the primary consideration. When considering aquamarine, you will hear terms like 'Santa Maria'or 'Martha Rocha'to describe what many believe is the best color of aquamarines. The term 'Santa Maria'comes from the color of aquamarines that were first mined in Brazil and come from the Santa Maria de Itabira mine. Aquamarines mined in Africa that have the same color as those mined in Brazil may be referred to as Santa Maria
Africana. Some will use the term 'Martha Rocha'to describe the blue color of an aquamarine. In the mid-1050s, a very large aquamarine crystal (approximately 74 pounds) was found and many considered it one of the most beautiful ever found. It was named for the 1954 Brazilian beauty queen Martha Rocha because it was supposed to be a match to the clear blue color of her eyes.
1. Aquamarine Cut - The cut and 'make'(proportions) are very important when evaluating an aquamarine. If the make of the gemstone is not good, the aquamarine will appear dull and lifeless 'a sad fate for such a bright lively gemstone. Aquamarine is a dichroic gemstone and may appear almost colorless when viewed from one angle and appear vivid blue when viewed from another angle. That is another reason the cut of an aquamarine is so important 'to get the best color when viewed from any angle. Aquamarine gemstones cut with low crown angles produce higher brilliance while those gemstones cut with higher crowns will deepen the color. 2. Aquamarine Hue 'The best hue for an aquamarine should be a pure medium hue of blue (think robins egg blue) although some prefer a slight green secondary hue. Having said that, most collectors of
aquamarine believe that if the green secondary hue is too great, the aquamarine is less valuable. 3. Aquamarine Tone 'Unlike most gemstones where the best tone is in the 75% to 85% range, some experts believe the best tone for an aquamarine is between 50% and 60%. If the tone is in the lower range of 10% to 30% range it will appear washed out and if it is above the 60% range, it will have too much grey. 4. Aquamarine Saturation 'Aquamarines should be vivid on the saturation scale. Saturation ranges from "grayish / brown" to "vivid". Think of the word "intensity" when evaluating saturation. There are 6 levels of saturation with 1 being the most gray / brown and 6 being the most vivid.
5. Aquamarine Carat Weight 'Aquamarine do occur in large clean crystals so the size of the finished aquamarine is not as important when evaluating an aquamarine. A 40 carat very pale aquamarine will be worth the same as a very fine deep blue aquamarine of 1 carat size. 6. Aquamarine Clarity 'Aquamarine is a GIA Type I meaning that they are normally clean gemstones. Occasionally, one can find a well cut but included aquamarine in which the inclusions (hollow rods) align and
create a cat's eye or a six ray star effect, but these are very rare and you can expect to pay a premium price for this kind of aquamarine. Bottom line, an aquamarine should be clear and bright and sparkle in any light, including
low light. If you love the aquamarine by daylight, it should improve in incandescent light. 7. Aquamarine Hardness - Aquamarine is rated an 8 on the Mohs hardness scale and jewelry made with aquamarine is suitable for everyday wear. 8. Aquamarine Gemological Report - A buyer who is considering the purchase of a loose aquamarine gemstone should request a professional gemological report in order to help them know exactly what they are purchasing. Grading reports may be shown using a numerical value and / or percent or be given an overall letter (B thru AAA to GEM) and description "grade" for the clarity and color - it will depend on with which laboratory the
gemologist trained. There are several recognized laboratories like Gemological Institute of America (GIA - uses the numerical scale), International Gemological Institute (IGI), International Gem Society (IGS), European
Gemological Center (EGC) and other Tier 1 labratories. 9. Aquamarine Imposters and Aquamarine Synthetics 'If you see the following names / terms used to describe an aquamarine, you need to ask more questions and ask for a gemological report. Many of these terms are no longer used but you might run across them;
Mass Aqua 'term used for light blue glass that may be used in fashion jewelry
Nerchinsk Aquamarine 'term used for what is really blue topaz
Siam Aquamarine 'a term used for heat-treated blue zircon 10. Aquamarine Gem Treatments 'Fine aquamarine does naturally occur without treatment but most aquamarine on the market today is heat treated to remove the yellow or brown hue. This treatment is not detectable by gemological testing because the heat applied is at such a low temperature. This is a permanent treatment and adds to the value of an aquamarine gemstone.