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26.45 ct Black Nuummite Gemstone, Nuummite Gem in Octagon Step Cut Shape for Sale.
Photos are of Actual Product for Sale
26.45 ct Black Nuummite Stone, Natural Nuummite in Octagon Step Cut Shape for Sale Nuummite Gemstone in 18.9 x 16.9 mm Size for Sale, Nuummite Stone in Black with Blue Sparkle Color

26.45ct Natural Black Nuummite, Emerald Cut, 18.9x16.9 mm

9.7 out of 10
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Product ID: 630317
Type: Nuummite
Weight: 26.45 ct 1 gem
Size: mm calibrated
Size: 18.9 x 16.9 x 10.4 mm
Exact Size: 18.91 x 16.91 x 10.39 mm
Length x Width x Depth
Shape: Octagon Step Cut
Color: Black with Blue Sparkle
Clarity: Opaque
Treatment: Untreated
Origin: India
Content: 1 pc
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$
139.97
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Product Description

This is a 26.45 carat natural black with blue sparkle Nuummite gem, 1 pc in octagon / emerald cut shape with an exact size of 18.91 x 16.91 x 10.39 mm. This loose Nuummite gemstone was mined in India and its clarity is Opaque. No treatment has been applied on this natural Nuummite stone

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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

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
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 -> 10 star ratings

I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.

Posted By Atsuhisa in January, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.

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