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Home Gemstones Onyx
1.63 ct Black Onyx Gemstone, Onyx Gem in Round Cabochon Shape for Sale.
Photos are of Actual Product for Sale
1.63 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

1.63ct Natural Black Onyx, Round Cut, 6.88 mm

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Product ID: 687500
Type: Onyx
Weight: 1.63 ct 1 gem
Size: 7 mm calibrated
Size: 6.9 mm
Exact Size: 6.88 x 4.31 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 1.63 carat natural black Onyx gem, 1 pc in round shape with an exact size of 6.88 mm x 4.31 mm . This loose Onyx gemstone was mined in Sri Lanka and its clarity is Opaque.

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Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
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I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
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Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
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They have a wonderful selection of gems of all sorts, shapes, cuts, and quality. I am very particular about the quality of stones I buy, and found many with VVS clarity and excellent cut and polish. I am thrilled with each of the stones I purchased, and would definitely recommend GemSelect to everyone.

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Overall Rating -> 10 star ratings

Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!

Posted By Britnee Rose in September, 2025
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