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Buy 12 mm Round Calibrated Gemstones from GemSelect

Round Shape 12 mm Gems Weight
Round Shape 12 mm Gems Size
Round Shape 12 mm Gems Clarity
Round Shape 12 mm Gems Price

Size Explained

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For Example: 8-9
Bi-color
Black Round Shape 12 mm Gems
Blue Round Shape 12 mm Gems
Brown Round Shape 12 mm Gems
Golden
Gray Round Shape 12 mm Gems
Green Round Shape 12 mm Gems
Multicolor Round Shape 12 mm Gems
Orange Round Shape 12 mm Gems
Pink Round Shape 12 mm Gems
Purple
Red Round Shape 12 mm Gems
Turquoise Round Shape 12 mm Gems
Violet Round Shape 12 mm Gems
White Round Shape 12 mm Gems
Yellow Round Shape 12 mm Gems
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12.53ct Brown Tiger'S Eye, Sphere / Ball, Opaque

12 mm (calibrated)

$ 12.58

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7.56ct White Quartz Cat'S Eye, Round, Transparent

12 mm (calibrated)

$ 33.13

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15.82ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 52.00

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6.99ct Brown Rutile Quartz, Round, Translucent

12 mm (calibrated)

$ 14.62

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6.50ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 74.27

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5.13ct Brown Smoky Quartz, Round, VS

12 mm (calibrated)

$ 20.68

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13.62ct Gray Pearl, Sphere / Ball, Opaque

12 mm (calibrated)

$ 186.53

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13.54ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 44.50

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11.12ctw Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 50.76

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7.13ct Pink Strawberry Quartz, Round, Translucent

12 mm (calibrated)

$ 49.71

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6.82ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 70.83

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10.60ctw Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 48.39

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5.59ct Brown Rutile Quartz, Round, Transparent

12 mm (calibrated)

$ 14.03

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25.67ctw Brown Tiger'S Eye, Sphere / Ball, Opaque

12 mm (calibrated)

$ 22.50

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4.90ct Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 19.75

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5.53ct Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 24.30

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24.43ctw Brown Tiger'S Eye, Sphere / Ball, Opaque

12 mm (calibrated)

$ 15.26

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5.46ct Violet Amethyst, Round, Transparent

12 mm (calibrated)

$ 38.06

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14.30ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 47.00

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12.76ct Brown Pearl, Sphere / Ball, Opaque

12 mm (calibrated)

$ 158.86

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5.36ct Brown Rutile Quartz, Round, Transparent

12 mm (calibrated)

$ 13.45

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8.19ctw Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 17.94

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4.89ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 16.08

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6.41ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 12.57

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Why Buy Round Shape 12 Mm Gems from GemSelect?

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

love the site, the experience and the products.

Posted By Ckingpots in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Would have bought an indigo and selenite, but neither listed. But, you do offer quite a large assortment otherwise.

Posted By JD in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate
Enlarged Gemstone Image