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Precious Gemstones
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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)

I received the Tsavorites Friday and I was stunned with the quality of the stones I received. I was worried about ordering calibrated stones without even having a picture of the exact stones I'd be receiving, but you didn't disappoint. The description said to expect some yellow, I didn't detect any yellow at all, if anything I picked up on a slight hint of blue which is very desirable. Anyhow, I had them set today, they hold their color and are bright in even the worst lighting. Thank you! Greg R. of St. Paul MN (bought Tsavorite gemstones)

Thank you for inquiring about the possible upgrade. The ring is too beautiful to jeopardize its integrity. I now will know the next time to use the chart when ordering. It is amazing how it changes color according to the light source. Thank you again, Lisa M. of Spokane WA (bought custom chatham alexandrite ring)

Again, beautiful quality. Am relieved they finally got here! Thanks for your help Cheers, Sonia R. of Tasmania (bought loose citrine gems)

Hi Marc, I received the alexandrite. The quality exceeded my expectations. Your stone was much nicer than anything that I saw locally. You got a repeat customer! Michelle R. of Chicago IL (bought loose alexandrite) My son delivered the stone and Denice was thrilled! Thanks Marc….a loooong road but all ended as we wanted Thank you for following up Michael D. from Naples FL (bought loose spessartite garnet)

The aquamarine stones arrived yesterday. Lovely color, as are all stones I have received from Africa Gems! They are already set in gold earring mounts and in my ears. Love them! Thank you! Renny B. from Province MA (bought loose aquamarines)

Marc, The ring is magnificent! Well worth the wait. Betty is very happy. The full cut diamonds make a world of difference and show off the alexandrite very nicely. I can't thank you enough for your excellent sales and service. --- If your up to it, I have another job for you. Eugene M from Albany NY (bought custom alkexandrite ring)

Hi Mark, I received the ring today and can not express enough how happy I am with it; great quality and design; it is exactly what I was looking for. Thank you, P.S. gummy bears was a cute touch, Bianna F. from Staten Island NY (bought quartz diamond ring)

Ok no problem. Thanks again for being so great. You have really helped to make a great experience for both of us. Brendan G. of St. Paul MN (bought heart shape blue sapphire)

Marc, The ring is great! We always wanted those alexandrites to stay together, and the bypass ring was the perfect solution. It's always a pleasure to work with you. Your attention to customer satisfaction and quality workmanship are first rate. Thanks, Eugene M. from Albany NY (bought custom alexandrite diamond ring)

Marc, I received my replacement alexandrites today and I absolutely love them. They are perfect. Thank you so much for your quick response, attention to detail and wonderful customer service. Doing business with Africa Gems has been a lovely experience and I look forward to doing business with you in the future. God bless. Lisa L. of Dover PA (bought loose alexandrite gems)

Received ring, sharp. Weird how the cognac diamonds make the silver look gold. Good job. Might have just made a sale for u with the ups man! She is gonna love it. When the shirt man gets my shirts made i will shoot u one out. Mark C from Birmingham AL (bought custom silver diamond ring)

Hi Marc, I hope you remember this ring, one year and a bit later, thought I'd send you some pics. It truly is gorgeous! My baby girl is a May flower, I'll be getting her something in the future! Thanks again! Cheers, Natalie B. of London UK (bought alexandrite diamond ring band)

Hi Marc The jewelry & gems have arrived. Well.....what can I say....Holy Sh... Absolutely stunning! Janetta is in her own little Nirvana! Now she will really bankrupt me! A great big thanks Karl K. from Manitoba Canada (bought many gems)

No worries, I'm thrilled with your service and the quality of gems.I will definitely be back whenever I need more! Thanks much, Rob G of Gary IN (bought loose aquamarines)

The purchase i made was well worth it , i bought a band had it put in the band and asked my girl friend to marry me. She said yes . Thanks again Paul H. from Charlotte MD (bought white sapphire gemstone)

My alexandrite ring was way beyond my expectations. It’s absolutely beautiful and I truly love it. I have waited a long time to get an Alexandrite ring. Well worth the wait. The service was outstanding and the quality was outstanding. Paula L. from Bethesda MD (bought large alexandrite diamond platinum ring)

ENHANCED COLORED DIAMONDS
Enhanced Diamonds - Buy Treated Colored Diamonds - Beautiful Enhanced Natural Loose Diamonds at AfricaGems
Enhanced Diamonds - Enhanced Fancy Colored Diamonds from AfricaGems.com
In the fancy colors, especially in the "fancy" to "vivid" color grades, the yellow, blue, red, green, blue and orange colors in diamonds are exceptionally rare. Compared to their natural fancy colored diamond cousins, Enhanced or treated diamonds are extremely affordable and make beautiful diamond jewelry .

Color Treatment of Diamonds
Color enhancement of diamonds in done in two ways. The most common way is by radiation. Low levels of radiation are applied to natural diamonds that are off in color. The low levels or radiation are completely safe and the diamonds are tested to ensure that no trace levels of radiation remain. The other method is to subject natural off colored diamonds to intense pressure and temperature, called the HTHP process. This process also changes the molecular structure of the diamonds so that intense, vivid colors are the result. AfricaGems.com color enhanced diamonds are from both radiation and HTHP processes.

Enhancing Diamonds with Radiation – The History of Using Radiation to Treat Diamonds
The technique of using radiation to affect a diamond’s color was first discovered by Sir William Crookes in 1904 when he conducted experiments using radium salts. However, his experiments created diamonds that were radioactive and unwearable. Subsequently there were safe ways of using the irradiation method in which high-energy particles enter the diamond and change the lattice structure in a way that an element other than carbon adds a vivid color to the diamond. While this treatment is generally used to treat diamonds, there are diamonds that were naturally exposed to radiation during their formation and they acquire unique colors; the most notable is the vivid bright green Dresden Diamond.

Shop for the Best Enhanced Color Treated Diamonds – How Does HTHP Work?
Our treated colored diamonds are enhanced using the HTHP process which stands for High Temperature High Pressure. In this treatment diamonds are exposed to temperatures of 2,000° C and pressures of 70,000 atmospheres. Diamonds naturally form under conditions of high pressure and high temperature deep below the earth’s surface. The idea of HTHP treatment is to simulate the natural conditions of diamond formation in order to produce a higher quality diamond. A diamond that would otherwise be considered off-colored can take on a more vivid shade of that color through HTHP. For example, reintroducing a diamond with traces of nitrogen (which causes yellow coloration) to its natural growth environment will cause the nitrogen to disperse into smaller particles which will result in a brighter and more even color of yellow. For other types of diamonds that have undesirable colors due to lattice defects the HTHP process enables the diamond to another chance to improve and repair itself so that the color is uniform and beautiful.

The History of HTHP – The Story of How Treated Colored Diamonds Evolved
At first, HTHP was only used to remove impurities and defects in diamonds to make them colorless. The HTHP method for colored diamonds was invented in 1999 by an industrial diamond manufacture in Utah called Novatek, they then formed a new company called NovaDiamond to market their newfound color treatment procedure. Through applying high levels of heat and pressure, they found out that they could diamonds to be colorless, yellow, green, blue, yellowish green or yellow.

Learn More About Treated Diamonds
More Information About Color Treated Diamonds from GIA
All About Diamond Enhancement - Wikipedia Article

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ENHANCED COLORED DIAMONDS
Enhanced Diamonds - Buy Treated Colored Diamonds - Beautiful Enhanced Natural Loose Diamonds at AfricaGems
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