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4.20 ct Black Onyx Gemstone, Onyx Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
4.20 ct Black Onyx Stone, Natural Onyx in Oval Cabochon Shape for Sale Onyx Gemstone in 13 x 11 mm (calibrated) Size for Sale, Onyx Stone in Black Color

4.20ct Natural Black Onyx, Oval, Opaque

9.2 out of 10
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Onyx Product ID: 672936
Type: Onyx
Onyx Weight: 4.20 ct Onyx 1 gem
Onyx Size: 13 x 11 mm calibrated Onyx
Onyx Size: 13.1 x 11.1 x 3.5 mm Onyx
Onyx Exact Size: 13.06 x 11.05 x 3.49 mm
Length x Width x Depth
Onyx Shape: Oval Cabochon Onyx
Onyx Color: Black Onyx
Onyx Clarity: Opaque Onyx
Onyx Treatment: Dyed
Onyx Origin: Sri Lanka Onyx
Content: 1 pc
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    Gemstone Laboratories
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  • 30-day risk free return policy

$
10.08
Quantity
3 pieces available
Item in Stock
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Product Description

This is a 4.20 carat natural black Onyx gem, 1 pc in oval shape with an exact size of 13.06 x 11.05 x 3.49 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 love the quality, presentation and the price of the stones. I love the identification card - report they send with each stone.

Posted By Dia in March, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

very good

Posted By Son Gift in January, 2025
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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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Overall Rating -> 10 star ratings

Nice website I just don't know much about the quality until I receive the stone.

Posted By Becky in December, 2024
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Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
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I can pick and choose from large selection and find just what I need for .y projects, currently my cane.

Posted By Darkstar731 in July, 2025
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Overall Rating -> 10 star ratings

It's mostly good, only some item's are easier to find through the search than the menu

Posted By Wayne in July, 2025
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Overall Rating -> 10 star ratings

It was easy to navigate

Posted By GemGod in July, 2025
Source: Bizrate
Download Identification Report PDF
BGL Brief Report $ 18.00
Turnaround Time: 3-4 working days Details
AIG Brief Report $ 35.00
Turnaround Time: 5-10 working days Details
ICA Brief Report $ 62.00
Turnaround Time: 8-12 working days Details
Enlarged Gemstone Image