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Home Gemstones Onyx
19.68 ct Black Onyx Gemstone, Onyx Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
19.68 ct Black Onyx Stone, Natural Onyx in Oval Cabochon Shape for Sale Onyx Gemstone in 25 x 18 mm (calibrated) Size for Sale, Onyx Stone in Black Color

19.68ct Natural Black Onyx, Oval Cut, 25.1x18.1 mm

9.7 out of 10
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Product ID: 672024
Type: Onyx
Weight: 19.68 ct 1 gem
Size: 25 x 18 mm calibrated
Size: 25.1 x 18.1 x 6.2 mm
Exact Size: 25.07 x 18.09 x 6.19 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 1 pc
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$
39.20
Quantity
4 pieces available
Item in Stock
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Product Description

This is a 19.68 carat natural black Onyx gem, 1 pc in oval shape with an exact size of 25.07 x 18.09 x 6.19 mm. This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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Posted By Marti in July, 2025
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I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
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