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ID: 4089251 pcs
thumb image of 13.1ct Oval Cabochon Blue Hemimorphite (ID: 408925)
13.12 ct Hemimorphite
14.6 x 12.3 mm
$ 432.96
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ID: 4169461 pcs
thumb image of 13.1ct Oval Checkerboard (double sided) Brown Smoky Quartz (ID: 416946)
13.10 ct Smoky Quartz
19.9 x 15 mm
$ 19.65
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ID: 2715391 pcs
thumb image of 12.5ct Pear Cabochon Green Chrysoprase (ID: 271539)
12.50 ct Chrysoprase
16.2 x 13.6 mm
$ 56.25
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ID: 4171901 pcs
thumb image of 13.7ct Oval Facet Golden Green Tourmaline (ID: 417190)
13.65 ct Tourmaline
15.9 x 12.9 mm
$ 2320.50
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ID: 4349171 pcs
thumb image of 13.7ct Pear Cabochon Gold Sheen Obsidian (ID: 434917)
13.69 ct Obsidian
22.8 x 14.3 mm
$ 13.69
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ID: 4737761 pcs
thumb image of 12.5ct Round Cabochon White Cat's Eye Moonstone (ID: 473776)
12.50 ct Cat's Eye Moonstone
13.8 mm
$ 50.00
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ID: 3821041 pcs
thumb image of 13.9ct Octagon Step Cut Golden Apatite (ID: 382104)
13.92 ct Apatite
13.2 x 15.6 mm
$ 895.49
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ID: 4027891 pcs
thumb image of 13.1ct Octagon Step Cut Bi-color Tourmaline (ID: 402789)
13.13 ct Tourmaline
12.3 x 11.5 mm
$ 2109.50
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ID: 4766461 pcs
thumb image of 13.1ct Baguette Cabochon Black Psilomelane (ID: 476646)
13.14 ct Psilomelane
20.7 x 10.4 mm
$ 11.17
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ID: 4357061 pcs
thumb image of 12.8ct Round Cabochon Colorless Golden Rutile Quartz (ID: 435706)
12.83 ct Rutile Quartz
14.2 mm
$ 31.82
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ID: 3983631 pcs
thumb image of 13.9ct Oval Facet Greenish Golden Apatite (ID: 398363)
13.86 ct Apatite
16.3 x 14.3 mm
$ 659.87
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ID: 4503751 pcs
thumb image of 13.8ct Octagon / Scissor Cut Light Blue Aquamarine (ID: 450375)
13.81 ct Aquamarine
18.4 x 10.3 mm
$ 2762.00
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ID: 4185491 pcs
thumb image of 12.8ct Oval Cabochon Cream Star Moonstone (ID: 418549)
12.80 ct Star Moonstone
16.3 x 13.9 mm
$ 51.20
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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: 3853531 pcs
thumb image of 13ct Oval Cabochon Greenish Golden Cat's Eye Apatite (ID: 385353)
12.95 ct Cat's Eye Apatite
17.3 x 10.4 mm
$ 259.00
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ID: 3235461 pcs
thumb image of 13.3ct Carved Rose with Half Drilled Hole Gold Brown Tiger's Eye (ID: 323546)
13.26 ct Tiger's Eye
16.5 x 16.1 mm
$ 15.91
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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: 3357861 pcs
thumb image of 13.8ct Spherical Golden Pearl (ID: 335786)
13.84 ct Pearl
12.5 mm
$ 207.60
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ID: 3357841 pcs
thumb image of 13.8ct Spherical Golden Pearl (ID: 335784)
13.80 ct Pearl
12.5 mm
$ 207.00
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ID: 4803711 pcs
thumb image of 13.5ct Carved Fruit Cabochon Swiss Blue Topaz (ID: 480371)
13.48 ct Topaz
19.8 x 11.2 mm
$ 67.40
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ID: 4621361 pcs
thumb image of 13.7ct Oval Cabochon Multicolor Opal (ID: 462136)
13.65 ct Opal
22.1 x 20.7 mm
$ 549.55
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13 Carat Gems
Buy gems by weight. Shop from our extensive range of beautiful, natural 13 carat gems. Browse the largest selection of natural loose colored gemstones available in 13 carats. Our large gemstone selection includes many popular gem types, such as amethyst, citrine, topaz and turquoise, and lesser-known gems, including rhodochrosite, ammolite and maw-sit-sit. 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 'tourmaline' to see all of our 13-carat tourmaline gems. Select 'multicolor' to shop for 13-carat multicolor 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