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3.11 ctw Black Onyx Gemstones, Onyx Gems in Round Cabochon Shape for Sale.
Photos are of Actual Products for Sale
3.11 ctw Black Onyx Stones, Natural Onyx in Round Cabochon Shape for Sale Onyx Gemstones in 7 mm (calibrated) Size for Sale, Onyx Stones in Black Color

3.11ct Natural Black Onyx, Round Cut, 7.16 mm

9.8 out of 10
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Onyx Product ID: 687839
Type: Onyx
Onyx Weight: 3.11 ct (total) Onyx 2 gems
avg. 1.56 ct
Onyx Size: 7 mm calibrated Onyx
Onyx Size: 7.2 mm Onyx
Onyx Exact Size: 7.16 x 3.87 mm
Diameter x Depth
Onyx Shape: Round 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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$
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Product Description

These are 3.11 carat natural black Onyx gems, 2 pcs in round shape with an exact size of 7.16 mm x 3.87 mm (avg.). These loose Onyx gemstones were mined in Sri Lanka and their clarity is Opaque.

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Posted By Tim W in February, 2026
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Enlarged Gemstone Image