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Home Gemstones Tourmaline
18.89 ct Black Tourmaline Gemstone, Tourmaline Gem in Octagon Step Cut Shape for Sale.
Photos are of Actual Product for Sale
18.89 ct Black Tourmaline Stone, Natural Tourmaline in Octagon Step Cut Shape for Sale Tourmaline Gemstone in 17.1 x 13.6 mm Size for Sale, Tourmaline Stone in Schorl Color

18.89ct Natural Black Tourmaline, Emerald Cut, 17.1x13.6 mm

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Product ID: 673530
Type: Tourmaline
Weight: 18.89 ct 1 gem
Size: mm calibrated
Size: 17.1 x 13.6 x 9.6 mm
Exact Size: 17.07 x 13.57 x 9.57 mm
Length x Width x Depth
Shape: Octagon Step Cut
Color: Schorl
Clarity: Opaque
Treatment: Untreated
Origin: Tanzania
Content: 1 pc
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Product Description

This is a 18.89 carat natural schorl Tourmaline gem, 1 pc in octagon / emerald cut shape with an exact size of 17.07 x 13.57 x 9.57 mm. This loose Tourmaline gemstone was mined in Tanzania and its clarity is Opaque. No treatment has been applied on this natural Tourmaline stone

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Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
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Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
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Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
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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
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Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
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Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
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