Buy 12 mm Round Calibrated Gemstones from GemSelect
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Bi-color
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Black Round Shape 12 mm Gems
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Blue Round Shape 12 mm Gems
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Brown Round Shape 12 mm Gems
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Golden
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Gray Round Shape 12 mm Gems
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Green Round Shape 12 mm Gems
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Multicolor Round Shape 12 mm Gems
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Orange Round Shape 12 mm Gems
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Pink Round Shape 12 mm Gems
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Purple
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Red Round Shape 12 mm Gems
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Turquoise Round Shape 12 mm Gems
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Violet Round Shape 12 mm Gems
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White Round Shape 12 mm Gems
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Yellow Round Shape 12 mm Gems
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
13.90ctw Green Jadeite, Round, Translucent
12 mm (calibrated)
$ 45.68
14.62ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 45.48
4.95ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 8.13
14.22ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 46.75
6.13ct Multicolor Pietersite, Round, Opaque
12 mm (calibrated)
$ 12.37
13.48ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.31
8.25ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 16.28
26.18ctw Multicolor Jasper, Sphere / Ball, Opaque
12 mm (calibrated)
$ 28.68
9.27ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 46.16
8.40ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 18.41
6.14ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 25.76
5.69ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 9.35
7.27ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 19.91
5.58ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 10.95
13.86ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 29.82
5.93ct Yellow Citrine, Round, VVS-VS
12 mm (calibrated)
$ 45.48
5.21ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 21.86
5.52ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 9.07
5.64ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 24.78
15.94ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 52.39
8.10ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 17.75
14.69ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 48.29
Why Buy Round Shape 12 Mm Gems from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
Easy process.
Overall Rating -> 8 
The website was easy to use and there were a lot of good options, I was satisfied.
Overall Rating -> 9 
Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly
Overall Rating -> 10
easy site to navigate
Overall Rating -> 10
the selection is good as are the prices
Overall Rating -> 10
Easy and good price
