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6.53 ctw Black Onyx Gemstones, Onyx Gems in Trillion Cabochon Shape for Sale.
Photos are of Actual Products for Sale
6.53 ctw Black Onyx Stones, Natural Onyx in Trillion Cabochon Shape for Sale Onyx Gemstones in 9.9 x 9.4 mm Size for Sale, Onyx Stones in Black Color

6.53ct Natural Black Onyx Gems, Trillion, Opaque

9.2 out of 10
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Onyx Product ID: 668252
Type: Onyx
Onyx Weight: 6.53 ct (total) Onyx 2 gems
avg. 3.27 ct
Onyx Size: mm calibrated Onyx
Onyx Size: 9.9 x 9.4 x 5.1 mm Onyx
Onyx Exact Size: 9.89 x 9.36 x 5.13 mm
Length x Width x Depth
Onyx Shape: Trillion Cabochon Onyx
Onyx Color: Black Onyx
Onyx Clarity: Opaque Onyx
Onyx Treatment: Dyed
Onyx Origin: Sri Lanka Onyx
Content: 2 pcs
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  • Natural certified gemstones

    Gemstone Laboratories
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$
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Product Description

These are 6.53 carat natural black Onyx gems, 2 pcs in trillion shape with an exact size of 9.89 x 9.36 x 5.13 mm. These loose Onyx gemstones were mined in Sri Lanka and their clarity is Opaque.

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Overall Rating -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.

Posted By Sina in April, 2025
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Posted By YE in October, 2025
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Overall Rating -> 9 star ratings

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 -> 8 star ratings

everything was fine

Posted By Marc in January, 2025
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I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.

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Posted By Ballpark in December, 2024
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I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
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Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
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