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Home Gemstones Onyx
20.38 ct Black Onyx Gemstone, Onyx Gem in Pear Rose-Cut Shape for Sale.
Photos are of Actual Product for Sale
20.38 ct Black Onyx Stone, Natural Onyx in Pear Rose-Cut Shape for Sale Onyx Gemstone in 25 x 18 mm (calibrated) Size for Sale, Onyx Stone in Black Color

20.38ct Natural Black Onyx, Pear Shape, 24.7x18 mm

9.7 out of 10
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Product ID: 669497
Type: Onyx
Weight: 20.38 ct 1 gem
Size: 25 x 18 mm calibrated
Size: 24.7 x 18 x 6.9 mm
Exact Size: 24.69 x 17.95 x 6.86 mm
Length x Width x Depth
Shape: Pear Rose-Cut
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 1 pc
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Product Description

This is a 20.38 carat natural black Onyx gem, 1 pc in pear shape shape with an exact size of 24.69 x 17.95 x 6.86 mm. This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
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Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
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Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
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Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
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Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
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Overall Rating -> 7 star ratings

Easy, quick.

Posted By Mich in June, 2026
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