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Buy 12 mm Round Calibrated Gemstones from GemSelect

Round Shape 12 mm Gems Weight
Round Shape 12 mm Gems Size
Round Shape 12 mm Gems Clarity
Round Shape 12 mm Gems Price

Size Explained

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For Example: 8-9
Bi-color
Black Round Shape 12 mm Gems
Blue Round Shape 12 mm Gems
Brown Round Shape 12 mm Gems
Golden
Gray Round Shape 12 mm Gems
Green Round Shape 12 mm Gems
Multicolor Round Shape 12 mm Gems
Orange Round Shape 12 mm Gems
Pink Round Shape 12 mm Gems
Purple
Red Round Shape 12 mm Gems
Turquoise Round Shape 12 mm Gems
Violet Round Shape 12 mm Gems
White Round Shape 12 mm Gems
Yellow Round Shape 12 mm Gems
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13.90ctw Green Jadeite, Round, Translucent

12 mm (calibrated)

$ 45.68

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14.62ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 45.48

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4.95ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 8.13

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14.22ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 46.75

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6.13ct Multicolor Pietersite, Round, Opaque

12 mm (calibrated)

$ 12.37

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13.48ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 44.31

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8.25ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 16.28

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26.18ctw Multicolor Jasper, Sphere / Ball, Opaque

12 mm (calibrated)

$ 28.68

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9.27ct Black Star Diopside, Round, Opaque

12 mm (calibrated)

$ 46.16

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8.40ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 18.41

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6.14ct Brown Smoky Quartz, Round, Transparent

12 mm (calibrated)

$ 25.76

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5.69ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 9.35

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7.27ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 19.91

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5.58ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 10.95

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13.86ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 29.82

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5.93ct Yellow Citrine, Round, VVS-VS

12 mm (calibrated)

$ 45.48

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5.21ct Brown Smoky Quartz, Round, Transparent

12 mm (calibrated)

$ 21.86

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5.52ct Brown Smoky Quartz, Round, VS

12 mm (calibrated)

$ 9.07

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5.64ct Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 24.78

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15.94ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 52.39

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8.10ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 17.75

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14.69ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 48.29

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Why Buy Round Shape 12 Mm Gems from GemSelect?

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

Easy process.

Posted By Crafty Seabee in March, 2026
Source: Bizrate

Overall Rating -> 8 star ratings

The website was easy to use and there were a lot of good options, I was satisfied.

Posted By Brielly in January, 2026
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Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

Posted By Ron T in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and good price

Posted By Bry_guy in March, 2026
Source: Bizrate
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