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 |
5.45ct Brown Smoky Quartz, Round, VVS-VS
12 mm (calibrated)
$ 17.92
12.95ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 212.83
5.20ct Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 28.49
4.91ct Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 19.80
12.39ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 203.62
5.55ct Violet Amethyst, Round, Transparent
12 mm (calibrated)
$ 38.69
10.43ctw Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 22.86
8.67ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 14.68
14.78ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 48.57
7.59ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 26.94
11.38ct White Rutile Quartz, Sphere / Ball, Translucent
12 mm (calibrated)
$ 13.10
5.33ct Yellow Quartz, Round, VS
12 mm (calibrated)
$ 11.69
6.23ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 27.37
10.97ct Gray Star Sapphire, Round, Opaque
12 mm (calibrated)
$ 420.66
5.67ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 11.12
7.82ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 13.24
10.25ctw Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 33.70
15.51ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 33.37
5.26ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 21.15
8.90ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 44.32
8.93ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 31.69
13.34ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 218.57
7.24ct Pink Morganite, Round, Translucent
12 mm (calibrated)
$ 78.53
10.50ctw Multicolor Mystic Quartz, Round, VVS-VS
12 mm (calibrated)
$ 31.37
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 
I loved the selection of gemstones you have a to z
Overall Rating -> 10 
I could see the actual gem I was buying
Overall Rating -> 10
This was an amazing experience! I have bought from Gem select in the past and ita's always an amazing time!
Overall Rating -> 10
Always get a nice gemstone. Just like the picture. Never disappointed
Overall Rating -> 10
overall great
Overall Rating -> 10
Very good
