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 |
5.19ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 8.53
7.97ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 28.38
6.91ctw Multicolor Pietersite, Round, Opaque
12 mm (calibrated)
$ 16.32
5.98ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 45.87
8.11ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 26.18
25.19ctw White Rutile Quartz, Sphere / Ball, Translucent
12 mm (calibrated)
$ 28.98
5.09ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 8.37
14.92ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 49.04
6.14ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 39.24
13.75ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 45.20
12.82ctw Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 42.37
27.14ctw Brown Rutile Quartz, Sphere / Ball, Transparent
12 mm (calibrated)
$ 24.78
8.13ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 32.39
6.41ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 12.57
6.41ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 25.41
5.06ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 21.23
5.32ct Yellow Quartz, Round, Transparent
12 mm (calibrated)
$ 17.59
13.13ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 40.85
9.28ct Gray Star Sapphire, Round, Opaque
12 mm (calibrated)
$ 355.85
9.82ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 48.90
5.69ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 9.35
4.06ct Multicolor Opal, Round, Opaque
12 mm (calibrated)
$ 121.31
5.66ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 15.50
5.24ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 21.07
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 -> 7 
Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying
Overall Rating -> 10 
I loved it! Extensive inventory, great prices, I definitely will be buying from here again!
Overall Rating -> 9 
They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!
Overall Rating -> 10
Very good.
Overall Rating -> 10
Very pleasant
Overall Rating -> 10
Web site is very simple to navigate Selection is terrific
