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 |
14.23ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 46.77
6.32ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 48.46
11.10ctw Multicolor Pietersite, Round, Opaque
12 mm (calibrated)
$ 26.20
5.23ct Pink Rose Quartz, Round, Transparent
12 mm (calibrated)
$ 20.80
10.95ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 54.53
10.73ct Red Star Garnet, Round, Opaque
12 mm (calibrated)
$ 10.57
5.42ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 29.69
11.09ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 55.23
5.06ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 21.23
7.55ct Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 9.02
4.26ct Multicolor Black Opal, Round, Opaque
12 mm (calibrated)
$ 124.11
6.50ct Black Cat'S Eye Scapolite, Round, Translucent
12 mm (calibrated)
$ 35.61
6.33ct Turquoise Larimar, Round, Opaque
12 mm (calibrated)
$ 75.08
14.02ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 30.16
6.37ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 44.11
5.53ct Pink Rose Quartz, Round, Transparent
12 mm (calibrated)
$ 18.33
4.46ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 24.44
6.07ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 46.55
7.91ct Green Jadeite, Round, Translucent
12 mm (calibrated)
$ 26.00
4.96ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 12.45
5.82ct Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 23.09
5.47ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 29.97
5.35ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 17.59
14.62ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 45.48
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 -> 8 
Good prices
Overall Rating -> 8
All went as well as previous orders. So far delivery has been as expected.
Overall Rating -> 10 
I loved it! Extensive inventory, great prices, I definitely will be buying from here again!
Overall Rating -> 9 
Plan on purchasing on an ongoing basis. So far.....so good....
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
Overall Rating -> 10
Very easy to navigate. Got what I wanted.
