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4.85 ct Black Onyx Gemstone, Onyx Gem in Cushion Cabochon Shape for Sale.
Photos are of Actual Product for Sale
4.85 ct Black Onyx Stone, Natural Onyx in Cushion Cabochon Shape for Sale Onyx Gemstone in 11 x 11 mm (calibrated) Size for Sale, Onyx Stone in Black Color

4.85ct Natural Black Onyx, Cushion Cut, Opaque

9.7 out of 10
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Onyx Product ID: 671953
Type: Onyx
Onyx Weight: 4.85 ct Onyx 1 gem
Onyx Size: 11 x 11 mm calibrated Onyx
Onyx Size: 11 x 10.9 x 5 mm Onyx
Onyx Exact Size: 10.98 x 10.91 x 5.03 mm
Length x Width x Depth
Onyx Shape: Cushion Cabochon Onyx
Onyx Color: Black Onyx
Onyx Clarity: Opaque Onyx
Onyx Treatment: Dyed
Onyx Origin: Sri Lanka Onyx
Content: 1 pc
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$
11.64
Quantity
5 pieces available
Item in Stock
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Product Description

This is a 4.85 carat natural black Onyx gem, 1 pc in cushion shape with an exact size of 10.98 x 10.91 x 5.03 mm. This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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Overall Rating -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
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I could see the actual gem I was buying

Posted By Bugs in December, 2025
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Overall Rating -> 9 star ratings

It was a good experience looking for and finding a nice amethyst stone

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Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
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Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
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Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
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