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Home Gemstones Spinel
18.25 ctw Black Spinel Gemstones, Spinel Gems in Trillion Rose-Cut Shape for Sale.
Photos are of Actual Products for Sale
18.25 ctw Black Spinel Stones, Natural Spinel in Trillion Rose-Cut Shape for Sale Spinel Gemstones in 9.8 x 9.6 mm Size for Sale, Spinel Stones in Black Color

18.25ct Natural Black Spinel, Trillion, 9.8x9.6 mm

9.6 out of 10
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Product ID: 267556
Type: Spinel
Weight: 18.25 ct (total) 4 gems
avg. 4.56 ct
Size: mm calibrated
Size: 9.8 x 9.6 x 4.9 mm
Exact Size: 9.75 x 9.56 x 4.94 mm
Length x Width x Depth
Shape: Trillion Rose-Cut
Color: Black
Clarity: Opaque
Treatment: Untreated
Origin: Thailand
Content: 4 pcs
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Product Description

These are 18.25 carat natural black Spinel gems, 4 pcs in trillion shape with an exact size of 9.75 x 9.56 x 4.94 mm. These loose Spinel gemstones were mined in Thailand and their clarity is Opaque. No treatment has been applied on these natural Spinel stones

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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 -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

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
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate
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