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ID: 3767471 pcs
thumb image of 11.9ct Marquise Facet Yellow Golden Citrine (ID: 376747)
11.86 ct Citrine
24.3 x 11.8 mm
$ 83.02
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ID: 4515161 pcs
thumb image of 12.8ct Fancy Cabochon Multicolor Ammolite (ID: 451516)
12.83 ct Ammolite
23.8 x 12.9 mm
$ 357.57
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ID: 3781971 pcs
thumb image of 12ct Cushion-Cut Violet Blue Tanzanite (ID: 378197)
12.03 ct Tanzanite
13.1 x 12.8 mm
$ 6123.75
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ID: 3846561 pcs
thumb image of 12.2ct Octagon Facet Bi-Color Ametrine (ID: 384656)
12.22 ct Ametrine
15.1 x 12.5 mm
$ 97.76
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ID: 3781951 pcs
thumb image of 11.8ct Cushion-Cut Violet Blue Tanzanite (ID: 378195)
11.81 ct Tanzanite
15.4 x 10.5 mm
$ 6011.76
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ID: 4164631 pcs
thumb image of 12.3ct Oval Facet Golden Green Tourmaline (ID: 416463)
12.25 ct Tourmaline
15.7 x 12.8 mm
$ 2450.00
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ID: 3286021 pcs
thumb image of 12.2ct Carved Rose with Half Drilled Hole Gold Brown Tiger's Eye (ID: 328602)
12.17 ct Tiger's Eye
15.6 x 13.7 mm
$ 14.60
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ID: 3988851 pcs
thumb image of 11.6ct Oval Facet Orange Spessartite Garnet (ID: 398885)
11.62 ct Spessartite Garnet
13 x 11.8 mm
$ 553.23
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ID: 3713631 pcs
thumb image of 12.1ct Oval Cabochon Multicolor Jasper (ID: 371363)
12.07 ct Jasper
16 x 12.2 mm
$ 12.07
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ID: 4079771 pcs
thumb image of 11.6ct Octagon / Scissor Cut Brown Smoky Quartz (ID: 407977)
11.58 ct Smoky Quartz
13.9 x 13.9 mm
$ 20.73
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ID: 3774381 pcs
thumb image of 12.1ct Fancy Cabochon Multicolor Ammolite (ID: 377438)
12.10 ct Ammolite
26.7 x 11.6 mm
$ 456.65
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ID: 3847981 pcs
thumb image of 12ct Marquise Slice Bi-Color Ruby in Fuchsite (ID: 384798)
12.02 ct Ruby in Fuchsite
28.6 x 15.5 mm
$ 82.10
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ID: 4009081 pcs
thumb image of 11.7ct Oval Facet Greenish Golden Apatite (ID: 400908)
11.65 ct Apatite
14.7 x 13 mm
$ 932.00
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ID: 3708351 pcs
thumb image of 12.2ct Oval Cabochon Multicolor Jasper (ID: 370835)
12.24 ct Jasper
19.9 x 15.1 mm
$ 12.24
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ID: 4503771 pcs
thumb image of 12.2ct Octagon / Scissor Cut Light Blue Aquamarine (ID: 450377)
12.17 ct Aquamarine
11.2 x 16 mm
$ 3099.00
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ID: 3707501 pcs
thumb image of 12.3ct Oval Cabochon Multicolor Jasper (ID: 370750)
12.26 ct Jasper
19.7 x 14.5 mm
$ 12.26
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ID: 3801071 pcs
thumb image of 12.5ct Cushion Cabochon Yellow Orange Fire Opal (ID: 380107)
12.52 ct Fire Opal
17.3 x 14.2 mm
$ 438.20
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ID: 4146281 pcs
thumb image of 11.6ct Round Facet Violet-Blue Color-Change Fluorite (ID: 414628)
11.55 ct Color-Change Fluorite
14 mm
$ 231.00
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ID: 4144031 pcs
thumb image of 11.7ct Round Facet Violet-Blue Color-Change Fluorite (ID: 414403)
11.73 ct Color-Change Fluorite
13.9 mm
$ 234.60
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ID: 3708371 pcs
thumb image of 12.3ct Oval Cabochon Multicolor Jasper (ID: 370837)
12.30 ct Jasper
18.2 x 13.2 mm
$ 12.30
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ID: 3934911 pcs
thumb image of 12.8ct Oval Cabochon Violet Amethyst (ID: 393491)
12.84 ct Amethyst
16.2 x 13 mm
$ 64.20
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12 Carat Gems
Buy gems by price. Select the best 12 carat gems from a wide array of colored stones, including rare gem types such as scapolite, black opal and pietersite. Also available are beautiful and popular faceted gems, including tanzanite, zircon and tourmaline. Large 12 carat gems make perfect statement stones, whether they are worn as a necklace pendant, ring or another jewelry design. Browse the largest selection of natural loose colored gemstones available in 12 carats. From here, you can use our filters at the top or on the left-hand side to find gems by gem type, color, shape, cut and so on. For example, select 'jadeite' to see all of our 12 carat jadeite gems. Select 'green' to shop for 12 carat green gems. You can also filter by single, pairs, lots, faceted gems or cabochons by using the check boxes at the top.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart