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19.52 ct Turquoise Grandidierite Gemstone, Grandidierite Gem in Oval Cabochon Shape for Sale.
Photos are of Actual Product for Sale
19.52 ct Turquoise Grandidierite Stone, Natural Grandidierite in Oval Cabochon Shape for Sale Grandidierite Gemstone in 17.3 x 14.2 mm Size for Sale, Grandidierite Stone in Deep Blue Green Color

19.52ct Turquoise Grandidierite, Oval Cut, 17.3x14.2 mm

9.7 out of 10
See Bizrate Ratings for GemSelect
Product ID: 471785
Type: Grandidierite
Weight: 19.52 ct 1 gem
Size: mm calibrated
Size: 17.3 x 14.2 x 10.2 mm
Exact Size: 17.29 x 14.18 x 10.16 mm
Length x Width x Depth
Shape: Oval Cabochon
Color: Deep Blue Green
Clarity: Translucent
Treatment: Untreated
Origin: Madagascar
Content: 1 pc
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$
2,576.64
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Product Description

This is a 19.52 carat natural deep blue green Grandidierite gem, 1 pc in oval shape with an exact size of 17.29 x 14.18 x 10.16 mm. This loose Grandidierite gemstone was mined in Madagascar and its clarity is Translucent. No treatment has been applied on this natural Grandidierite 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

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 -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 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 -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
Source: Bizrate
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