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Home Gemstones Onyx
3.16 ct Black Onyx Gemstone, Onyx Gem in Trillion Cabochon Shape for Sale.
Photos are of Actual Product for Sale
3.16 ct Black Onyx Stone, Natural Onyx in Trillion Cabochon Shape for Sale Onyx Gemstone in 9.8 x 9.3 mm Size for Sale, Onyx Stone in Black Color

3.16ct Natural Black Onyx, Trillion, 9.8x9.3 mm

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Product ID: 669125
Type: Onyx
Weight: 3.16 ct 1 gem
Size: mm calibrated
Size: 9.8 x 9.3 x 5 mm
Exact Size: 9.84 x 9.32 x 5.00 mm
Length x Width x Depth
Shape: Trillion Cabochon
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 1 pc
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$
3.15
Quantity
3 pieces available
Item in Stock
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Product Description

This is a 3.16 carat natural black Onyx gem, 1 pc in trillion shape with an exact size of 9.84 x 9.32 x 5.00 mm. This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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Posted By Mel in February, 2026
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Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

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Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

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

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Posted By Tim in July, 2025
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