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 |
8.50ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 42.33
5.80ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 19.07
5.28ct Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 11.57
5.14ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 21.57
22.63ctw Multicolor Jasper, Sphere / Ball, Opaque
12 mm (calibrated)
$ 24.79
15.42ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 27.65
5.43ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 14.88
4.23ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 10.62
7.55ct Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 18.34
6.16ct Violet Amethyst, Round, VVS-VS
12 mm (calibrated)
$ 36.81
15.39ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 50.59
7.63ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 33.43
10.02ctw Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 45.74
6.89ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 78.70
5.42ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 14.85
7.77ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 27.67
5.58ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 30.57
5.29ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 21.26
9.10ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 8.62
4.67ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 7.68
8.27ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 14.00
6.28ctw Multicolor Pietersite, Round, Opaque
12 mm (calibrated)
$ 14.70
5.27ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 17.32
5.20ct Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 28.49
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 
Recomendado Totalmente Los Productos Se Entregaron A Tiempo
Overall Rating -> 10
I can pick and choose from large selection and find just what I need for .y projects, currently my cane.
Overall Rating -> 10
The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.
Overall Rating -> 10
Love, and have always loved, your website.
Overall Rating -> 10
IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.
Overall Rating -> 10
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
