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 |
8.40ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 36.81
9.33ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 13.16
8.74ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 19.16
10.10ct Multicolor Agate, Round, Opaque
12 mm (calibrated)
$ 9.56
8.50ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 30.17
14.23ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 46.77
6.75ct Brown Tiger'S Eye, Round, Opaque
12 mm (calibrated)
$ 8.75
7.68ct Green Maw-Sit-Sit, Round, Opaque
12 mm (calibrated)
$ 25.24
12.39ct Gray Pearl, Sphere / Ball, Opaque
12 mm (calibrated)
$ 203.62
12.60ct Green Maw-Sit-Sit, Round, Opaque
12 mm (calibrated)
$ 41.42
8.06ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 40.14
5.78ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 11.35
5.47ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 29.97
5.48ct Multicolor Mystic Quartz, Round, VVS-VS
12 mm (calibrated)
$ 16.38
6.38ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 7.62
10.73ct Red Star Garnet, Round, Opaque
12 mm (calibrated)
$ 10.57
6.28ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 48.16
10.11ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 50.35
6.17ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 24.47
6.16ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 25.85
13.47ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 44.27
5.35ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 29.32
15.03ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 49.40
5.26ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 21.15
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 did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.
Overall Rating -> 8 
Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.
Overall Rating -> 10 
I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.
Overall Rating -> 10
hassle free 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
overall great
