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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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9.82ct Black Star Diopside, Round, Opaque

12 mm (calibrated)

$ 48.90

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5.28ct Yellow Citrine, Round, VS

12 mm (calibrated)

$ 46.27

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7.60ct Brown Tiger'S Eye, Round, Opaque

12 mm (calibrated)

$ 9.84

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6.96ct Pink Morganite, Round, Translucent

12 mm (calibrated)

$ 76.25

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5.67ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 11.12

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13.21ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 41.10

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8.77ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 24.01

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5.53ct Brown Smoky Quartz, Round, VVS

12 mm (calibrated)

$ 10.85

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7.27ct Black Spinel, Round, Opaque

12 mm (calibrated)

$ 23.90

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4.65ct Multicolor Pietersite, Round, Opaque

12 mm (calibrated)

$ 10.97

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5.69ct Pink Morganite, Round, Transparent

12 mm (calibrated)

$ 62.34

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6.60ct Yellow Quartz, Round, VVS

12 mm (calibrated)

$ 36.15

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6.24ct Multicolor Labradorite, Round, Translucent

12 mm (calibrated)

$ 15.17

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5.28ct Brown Smoky Quartz, Round, VVS-VS

12 mm (calibrated)

$ 17.35

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6.49ct Brown Rutile Quartz, Round, Transparent

12 mm (calibrated)

$ 14.23

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24.11ctw Multicolor Jasper, Sphere / Ball, Opaque

12 mm (calibrated)

$ 26.41

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14.26ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 44.37

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5.44ct Yellow Citrine, Round, VS

12 mm (calibrated)

$ 47.68

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6.27ct Black Spinel, Round, Opaque

12 mm (calibrated)

$ 17.17

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10.50ctw Multicolor Mystic Quartz, Round, VVS-VS

12 mm (calibrated)

$ 31.37

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6.50ct Blue Larimar, Round, Opaque

12 mm (calibrated)

$ 32.12

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10.69ctw Yellow Quartz, Round, Transparent

12 mm (calibrated)

$ 35.33

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5.17ct Yellow Quartz, Round, Transparent

12 mm (calibrated)

$ 20.51

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14.47ctw Black Spinel, Round, Opaque

12 mm (calibrated)

$ 47.56

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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

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy to use website

Posted By Mel in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Always get a nice gemstone. Just like the picture. Never disappointed

Posted By Ron T in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.

Posted By Beman in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very food

Posted By Keeto in July, 2025
Source: Bizrate
Enlarged Gemstone Image