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 |
14.86ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 48.85
9.99ctw Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 54.73
6.34ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 10.42
6.71ct Yellow Apatite, Round, VVS-VS
12 mm (calibrated)
$ 183.50
13.34ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 218.57
5.50ct Pink Rose Quartz, Round, Transparent
12 mm (calibrated)
$ 21.88
12.16ct White Rutile Quartz, Sphere / Ball, Translucent
12 mm (calibrated)
$ 13.99
4.95ct Yellow Citrine, Round, VVS-VS
12 mm (calibrated)
$ 39.86
4.39ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 14.43
6.06ct Pink Rose Quartz, Round, Transparent
12 mm (calibrated)
$ 24.10
5.99ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 45.93
12.29ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 38.24
4.46ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 24.44
7.82ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 13.24
14.26ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.37
5.05ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 13.84
12.96ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 40.33
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 
GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!
Overall Rating -> 10
Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!
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 -> 10
I have been very happy with my prior purchases and enjoy the website experience.
Overall Rating -> 8 
I visited several online loose stone shops trying to find rare stones. I finally found one that I've been looking for here, and very satisfied. Looking forward to receive the item in 3 weeks.
Overall Rating -> 10
Very good.
