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1.70 ctw Black Onyx Gemstones, Onyx Gems in Round Cabochon Shape for Sale.
Photos are of Actual Products for Sale
1.70 ctw Black Onyx Stones, Natural Onyx in Round Cabochon Shape for Sale Onyx Gemstones in 5.5 mm (calibrated) Size for Sale, Onyx Stones in Black Color

1.70ct Natural Black Onyx, Round Cut, 5.57 mm

9.6 out of 10
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Product ID: 688176
Type: Onyx
Weight: 1.70 ct (total) 2 gems
avg. 0.85 ct
Size: 5.5 mm calibrated
Size: 5.6 mm
Exact Size: 5.57 x 3.12 mm
Diameter x Depth
Shape: Round Cabochon
Color: Black
Clarity: Opaque
Treatment: Dyed
Origin: Sri Lanka
Content: 2 pcs
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  • Natural certified gemstones

    Gemstone Laboratories
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$
4.08
Item is Sold
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Product Description

These are 1.70 carat natural black Onyx gems, 2 pcs in round shape with an exact size of 5.57 mm x 3.12 mm (avg.). These loose Onyx gemstones were mined in Sri Lanka and their clarity is Opaque.

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GemSelect Certified Store Reviews

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Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

overall great

Posted By SR in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very neat and to the point

Posted By Botha in March, 2026
Source: Bizrate
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Enlarged Gemstone Image