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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: 3434641 pcs
thumb image of 12.1ct Carved Rose with Half Drilled Hole Gold Brown Tiger's Eye (ID: 343464)
12.09 ct Tiger's Eye
16.3 x 16.2 mm
$ 14.51
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ID: 4503721 pcs
thumb image of 11.9ct Baguette / Scissor Cut Light Blue Aquamarine (ID: 450372)
11.89 ct Aquamarine
16.8 x 9.9 mm
$ 2972.50
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ID: 4871531 pcs
thumb image of 12.1ct Fancy Cabochon Multicolor Fire Agate (ID: 487153)
12.12 ct Fire Agate
17.7 x 12.8 mm
$ 93.69
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ID: 4800391 pcs
thumb image of 12ct Carved Fruit Swiss Blue Topaz (ID: 480039)
12.00 ct Topaz
19.6 x 11.6 mm
$ 60.00
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ID: 4183651 pcs
thumb image of 12.6ct Oval Cabochon Cream Star Moonstone (ID: 418365)
12.57 ct Star Moonstone
14.7 x 12.1 mm
$ 50.28
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ID: 4871891 pcs
thumb image of 11.6ct Fancy Cabochon Multicolor Fire Agate (ID: 487189)
11.58 ct Fire Agate
18.8 x 11 mm
$ 89.51
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ID: 4843881 pcs
thumb image of 12.5ct Oval Cabochon Cream Star Moonstone (ID: 484388)
12.51 ct Star Moonstone
15.3 x 13.2 mm
$ 50.04
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ID: 4185461 pcs
thumb image of 12.4ct Oval Cabochon Cream Star Moonstone (ID: 418546)
12.43 ct Star Moonstone
18.2 x 12.4 mm
$ 49.72
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ID: 4270501 pcs
thumb image of 12.1ct Oval Facet Pink Kunzite (ID: 427050)
12.13 ct Kunzite
13.1 x 11.7 mm
$ 181.95
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ID: 4168631 pcs
thumb image of 12.4ct Oval Cabochon Cream Star Moonstone (ID: 416863)
12.35 ct Star Moonstone
14.6 x 12.3 mm
$ 49.40
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ID: 4708451 pcs
thumb image of 12.1ct Oval Cabochon Grayish Silver Star Sapphire (ID: 470845)
12.12 ct Star Sapphire
12.3 x 11.4 mm
$ 424.20
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ID: 4168621 pcs
thumb image of 12.2ct Oval Cabochon Cream Star Moonstone (ID: 416862)
12.22 ct Star Moonstone
14.5 x 11.7 mm
$ 48.88
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ID: 3847241 pcs
thumb image of 11.7ct Marquise Slice Bi-Color Ruby in Fuchsite (ID: 384724)
11.71 ct Ruby in Fuchsite
28.2 x 13.2 mm
$ 79.98
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ID: 4708591 pcs
thumb image of 12.2ct Fancy Cabochon Green Aventurine (ID: 470859)
12.17 ct Aventurine
17.7 x 13.7 mm
$ 6.09
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ID: 4183681 pcs
thumb image of 12ct Oval Cabochon Cream Star Moonstone (ID: 418368)
11.98 ct Star Moonstone
18.2 x 12.4 mm
$ 47.92
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ID: 4185481 pcs
thumb image of 11.9ct Oval Cabochon Cream Star Moonstone (ID: 418548)
11.92 ct Star Moonstone
15.1 x 11.9 mm
$ 47.68
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ID: 4336431 pcs
thumb image of 12.1ct Fancy Crystal Cluster Blue Druzy Azurite (ID: 433643)
12.05 ct Druzy Azurite
17 x 13.8 mm
$ 60.25
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ID: 4734201 pcs
thumb image of 12.3ct Oval Facet Gray Blue Sheen Labradorite (ID: 473420)
12.30 ct Labradorite
18.3 x 13.2 mm
$ 24.60
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ID: 4872421 pcs
thumb image of 12.6ct Trillion Cabochon Green Aventurine (ID: 487242)
12.64 ct Aventurine
20.5 x 16 mm
$ 6.32
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ID: 4185411 pcs
thumb image of 11.6ct Oval Cabochon Cream Star Moonstone (ID: 418541)
11.61 ct Star Moonstone
17.7 x 12.3 mm
$ 46.44
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12 Carat Gems
Buy gems by weight. 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