Tourmalines and Opals - 20% Off ALL Fine Gem Tourmaline & Opal Gemstones - Use Coupon Code "october2018"
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Square Cushion Cut - Calibrated
Faceted Square Cushion Cut Grade AAA Black Onyx Gemstones on SALE - Loose Onyx Gems in Standard Sizes
Calibrated Onyx Gemstones in Antique Square Cut for Sale

Shop Beautiful Black Onyx Rings
Shop Stunning Black Onyx Pendants
Shop Lovely Black Onyx Earrings
Shop Magnificent Black Onyx Matched Sets

NOTE:
Onyx Antique Square Cut Gemstones

The carat weights of the Onyx Antique Square Cut calibrated gemstones listed here are only approximate weights. The actual carat weight of the Antique Square cut Onyx you receive can be more or less than the listed carat weight. Standard calibrated Antique Square shaped Onyx Gemstones are based on dimensions, not carat weight.