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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

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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.