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Home Gemstones Onyx
1.58 ct Black Onyx Gemstone, Onyx Gem in Round Cabochon Shape for Sale.
Photos are of Actual Product for Sale
1.58 ct Black Onyx Stone, Natural Onyx in Round Cabochon Shape for Sale Onyx Gemstone in 7 mm (calibrated) Size for Sale, Onyx Stone in Black Color

1.58ct Natural Black Onyx, Round Cut, 7.15 mm

9.7 out of 10
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Product ID: 687498
Type: Onyx
Weight: 1.58 ct 1 gem
Size: 7 mm calibrated
Size: 7.2 mm
Exact Size: 7.15 x 3.74 mm
Diameter x Depth
Shape: Round Cabochon
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 1 pc
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Product Description

This is a 1.58 carat natural black Onyx gem, 1 pc in round shape with an exact size of 7.15 mm x 3.74 mm . This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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GemSelect Certified Store Reviews

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Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
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I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

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

It was fine

Posted By Na in April, 2026
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I love the products. I've bought them as gifts and people love my gifts

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I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
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Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
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