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 |
12.53ct Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 12.58
7.56ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 33.13
15.82ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 52.00
6.99ct Brown Rutile Quartz, Round, Translucent
12 mm (calibrated)
$ 14.62
6.50ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 74.27
5.13ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 20.68
13.62ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 186.53
13.54ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.50
11.12ctw Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 50.76
7.13ct Pink Strawberry Quartz, Round, Translucent
12 mm (calibrated)
$ 49.71
6.82ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 70.83
10.60ctw Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 48.39
5.59ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 14.03
25.67ctw Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 22.50
4.90ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 19.75
5.53ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 24.30
24.43ctw Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 15.26
5.46ct Violet Amethyst, Round, Transparent
12 mm (calibrated)
$ 38.06
14.30ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 47.00
12.76ct Brown Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 158.86
5.36ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 13.45
8.19ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 17.94
4.89ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 16.08
6.41ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 12.57
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 -> 9 
The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.
Overall Rating -> 10 
love the site, the experience and the products.
Overall Rating -> 10
Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.
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
Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.
Overall Rating -> 10
My experience was done with ease
