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 |
6.50ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 74.27
15.82ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 52.00
13.62ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 186.53
10.60ctw Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 48.39
13.54ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.50
4.90ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 19.75
5.53ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 24.30
6.99ct Brown Rutile Quartz, Round, Translucent
12 mm (calibrated)
$ 14.62
7.56ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 33.13
12.53ct Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 12.58
6.82ct Blue Larimar, Round, Opaque
12 mm (calibrated)
$ 70.83
25.67ctw Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 22.50
11.12ctw Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 50.76
5.59ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 14.03
5.13ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 20.68
7.13ct Pink Strawberry Quartz, Round, Translucent
12 mm (calibrated)
$ 49.71
5.46ct Violet Amethyst, Round, Transparent
12 mm (calibrated)
$ 38.06
5.96ct Violet Amethyst, Round, Transparent
12 mm (calibrated)
$ 41.55
12.76ct Brown Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 158.86
24.43ctw Brown Tiger'S Eye, Sphere / Ball, Opaque
12 mm (calibrated)
$ 15.26
14.30ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 47.00
5.36ct Brown Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 13.45
12.77ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 39.74
6.14ct Pink Strawberry Quartz, Round, Translucent
12 mm (calibrated)
$ 37.54
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 
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
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
Overall Rating -> 10
I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.
Overall Rating -> 8 
Good prices
Overall Rating -> 10
Great prices!!! High quality gemstones.
Overall Rating -> 10
Very good place to buy gemstones
