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Home Gemstones Gemstones By Weight 15 ct Gemstones

Buy Big 15 Carat Natural Gemstones

15 ct Gemstones Weight
15 ct Gemstones Size
15 ct Gemstones Clarity
15 ct Gemstones Price
15 ct Gemstones Treatment

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For Example: 8-9
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Green 15 ct Gemstones
Multicolor 15 ct Gemstones
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15.12ct Multicolor Agate, Oval, Opaque

15 x 15 mm (calibrated)

$ 21.33

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15.60ct Violet Amethyst, Emerald Cut, VVS

18 x 13 mm (calibrated)

$ 108.76

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15.69ct Green Prehnite, Fancy, Translucent

20.3 x 13.4 mm

$ 27.16

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15.12ct Multicolor Agate, Fancy, Translucent

16.8 x 9.5 mm

$ 26.48

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15.71ct Blue Topaz, Pear Shape, VVS-VS

17.5 x 12 mm

$ 109.53

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15.73ct Multicolor Boulder Opal, Pear Shape, Opaque

36.4 x 16.2 mm

$ 78.34

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15.43ct Red Strawberry Quartz, Oval, Translucent

17.7 x 13.6 mm

$ 118.33

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15.86ct Yellow Quartz, Oval, Transparent

16.6 x 13.3 mm

$ 15.79

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15.32ct Red Star Garnet, Oval, Opaque

17.2 x 10.6 mm

$ 15.87

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15.53ct Blue Topaz, Emerald Cut, VS

16 x 12 mm (calibrated)

$ 155.30

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15.91ct Purple Ruby, Fancy, Opaque

34.3 x 12.3 mm

$ 369.72

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15.18ct White Howlite, Pear Shape, Opaque

23.6 x 16.4 mm

$ 7.56

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15.33ct Black Tourmaline, Oval, Opaque

16.8 x 14.2 mm

$ 76.34

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15.07ct Multicolor Jasper, Cushion, Opaque

23.5 x 18.1 mm

$ 16.52

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15.59ct Brown Moonstone, Fancy, Translucent

24.4 x 14.3 mm

$ 17.94

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15.73ct Blue Larimar, Oval, Opaque

20 x 15 mm (calibrated)

$ 187.81

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15.21ct Blue Lapis Lazuli, Oval, Opaque

16 x 12 mm (calibrated)

$ 26.05

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15.95ct Purple Ruby-Zoisite, Flower Cut, Opaque

14 x 12 mm (calibrated)

$ 19.38

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15.64ct Red Star Garnet, Oval, Opaque

12.9 x 11.4 mm

$ 15.42

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15.41ct Red Ruby, Oval, VS-SI

14.5 x 12.9 mm

$ 491.14

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15.06ct Green Uvarovite Garnet Drusy, Oval, Opaque

18.9 x 12.5 mm

$ 49.00

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15.04ct Black Tourmaline, Emerald Cut, Opaque

20.4 x 10.6 mm

$ 74.90

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15.82ct Black Obsidian, Trillion, Opaque

23.6 x 20.4 mm

$ 26.00

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15.60ct Multicolor Cinnabar, Oval, Opaque

23.3 x 16.5 mm

$ 18.26

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Why Buy 15 Ct Gemstones from GemSelect?

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 8 star ratings

Good prices

Posted By TRM in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
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

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

Overall Rating -> 10 star ratings

The stones are very nice.

Posted By Mvk in August, 2025
Source: Bizrate
Enlarged Gemstone Image