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6.63 ct Black Nuummite Gemstone, Nuummite Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
6.63 ct Black Nuummite Stone, Natural Nuummite in Oval Cabochon Shape for Sale Nuummite Gemstone in 16.7 x 9.6 mm Size for Sale, Nuummite Stone in Black with Blue Sparkle Color

6.63ct Black with Blue Sparkle Nuummite, Oval Cut, 16.7x9.6 mm

9.6 out of 10
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Product ID: 645681
Type: Nuummite
Weight: 6.63 ct 1 gem
Size: mm calibrated
Size: 16.7 x 9.6 x 5.1 mm
Exact Size: 16.66 x 9.57 x 5.13 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Black with Blue Sparkle
Clarity: Opaque
Treatment: Untreated
Origin: India
Content: 1 pc
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Product Description

This is a 6.63 carat natural black with blue sparkle Nuummite gem, 1 pc in oval shape with an exact size of 16.66 x 9.57 x 5.13 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

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Overall Rating -> 10 star ratings

Wonderful purchase, can't wait to see the stone.

Posted By Tim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

went well

Posted By Doug in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the products. I've bought them as gifts and people love my gifts

Posted By Love it! in February, 2026
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

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate
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