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 |
10.02ctw Yellow Quartz, Round, VVS-VS
12 mm (calibrated)
$ 45.74
5.84ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 44.79
13.38ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 41.63
10.06ctw Multicolor Labradorite, Round, Translucent
12 mm (calibrated)
$ 21.65
12.96ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 40.33
5.29ct Yellow Quartz, Round, Transparent
12 mm (calibrated)
$ 20.98
5.60ct White Rutile Quartz, Round, Transparent
12 mm (calibrated)
$ 14.04
24.81ctw Multicolor Jasper, Sphere / Ball, Opaque
12 mm (calibrated)
$ 27.18
7.71ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 27.46
4.91ct Orange Sunstone, Round, Translucent
12 mm (calibrated)
$ 29.97
14.91ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 46.38
26.18ctw Multicolor Jasper, Sphere / Ball, Opaque
12 mm (calibrated)
$ 28.68
5.41ct Yellow Quartz, Round, Transparent
12 mm (calibrated)
$ 21.46
7.77ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 27.67
6.95ct Yellow Citrine, Round, VVS-VS
12 mm (calibrated)
$ 53.30
5.29ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 21.26
14.85ctw Black Spinel, Round, Opaque
12 mm (calibrated)
$ 48.81
4.86ct Brown Smoky Quartz, Round, Transparent
12 mm (calibrated)
$ 20.38
5.42ct Brown Smoky Quartz, Round, VVS
12 mm (calibrated)
$ 17.82
7.46ct White Quartz Cat'S Eye, Round, Transparent
12 mm (calibrated)
$ 32.69
6.39ct Yellow Quartz, Round, VVS
12 mm (calibrated)
$ 25.34
5.78ct Yellow Citrine, Round, VVS
12 mm (calibrated)
$ 44.33
5.52ct Brown Smoky Quartz, Round, VS
12 mm (calibrated)
$ 9.07
4.95ct Yellow Citrine, Round, VVS-VS
12 mm (calibrated)
$ 39.86
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 
The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.
Overall Rating -> 9
The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.
Overall Rating -> 9
It was fine . Wish there had been more round stones to select from
Overall Rating -> 10 
I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future
Overall Rating -> 10
I love the products. I've bought them as gifts and people love my gifts
Overall Rating -> 10
It was good. There was a large selection at prices I could afford.
