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8.25 ctw Black Onyx Gemstones, Onyx Gems in Oval Cabochon Shape for Sale.
Photos are of Actual Products for Sale
8.25 ctw Black Onyx Stones, Natural Onyx in Oval Cabochon Shape for Sale Onyx Gemstones in 13 x 11 mm (calibrated) Size for Sale, Onyx Stones in Black Color

8.25ct Natural Black Onyx, Oval Cut, 13.1x11 mm

9.7 out of 10
See Bizrate Ratings for GemSelect
Product ID: 673183
Type: Onyx
Weight: 8.25 ct (total) 2 gems
avg. 4.13 ct
Size: 13 x 11 mm calibrated
Size: 13.1 x 11 x 3.5 mm
Exact Size: 13.08 x 11.03 x 3.51 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 2 pcs
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$
16.43
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Product Description

These are 8.25 carat natural black Onyx gems, 2 pcs in oval shape with an exact size of 13.08 x 11.03 x 3.51 mm. These loose Onyx gemstones were mined in Sri Lanka and their clarity is Opaque.

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GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I love the product and the details about each of them.

Posted By Love It! in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

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
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate
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Enlarged Gemstone Image