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You Selected (520): 15 Carat Gems Clear All
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ID: 3333831 pcs
thumb image of 15.4ct Oval Facet Cinnamon Orange Hessonite Garnet (ID: 333383)
15.39 ct Hessonite Garnet
16.8 x 13.5 mm
$ 2,308.50
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ID: 4009091 pcs
thumb image of 14.8ct Oval Facet Greenish Golden Apatite (ID: 400909)
14.76 ct Apatite
16.5 x 13.5 mm
$ 1,180.80
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ID: 4849191 pcs
thumb image of 15.5ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484919)
15.50 ct Mystic Topaz
16 x 12.1 mm
$ 139.50
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ID: 2621091 pcs
thumb image of 15.9ct Oval Cabochon Orange Cream Star Moonstone (ID: 262109)
15.93 ct Star Moonstone
14.2 x 13.4 mm
$ 63.72
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ID: 4621351 pcs
thumb image of 15.4ct Oval Cabochon Yellow Opal (ID: 462135)
15.44 ct Opal
18.8 x 15.7 mm
$ 621.61
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ID: 3821021 pcs
thumb image of 15.3ct Oval Facet Golden Apatite (ID: 382102)
15.28 ct Apatite
16.9 x 14.1 mm
$ 895.87
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ID: 4170261 pcs
thumb image of 14.8ct Oval Cabochon Cream Star Moonstone (ID: 417026)
14.83 ct Star Moonstone
18.6 x 14.9 mm
$ 59.32
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ID: 4849161 pcs
thumb image of 14.7ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484916)
14.68 ct Mystic Topaz
16 x 12.1 mm
$ 132.12
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ID: 4503701 pcs
thumb image of 15.4ct Octagon / Scissor Cut Light Blue Aquamarine (ID: 450370)
15.37 ct Aquamarine
23.7 x 9.2 mm
$ 3,074.00
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ID: 4621331 pcs
thumb image of 15.4ct Pear Cabochon Multicolor Opal (ID: 462133)
15.39 ct Opal
22.8 x 17.9 mm
$ 619.60
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ID: 4849271 pcs
thumb image of 14.6ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484927)
14.61 ct Mystic Topaz
15.5 x 11.9 mm
$ 131.49
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ID: 4849171 pcs
thumb image of 14.5ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484917)
14.50 ct Mystic Topaz
15.7 x 11.9 mm
$ 130.50
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ID: 4860061 pcs
thumb image of 14.5ct Oval Cabochon Multicolor Opal (ID: 486006)
14.53 ct Opal
20.9 x 14.6 mm
$ 584.98
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ID: 4869411 pcs
thumb image of 15.5ct Oval Facet Orange Spessartite Garnet (ID: 486941)
15.53 ct Spessartite Garnet
15.3 x 12.9 mm
$ 621.20
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ID: 3841151 pcs
thumb image of 15.4ct Oval Cabochon Lavender Jadeite (ID: 384115)
15.42 ct Jadeite
19.3 x 12.6 mm
$ 23.13
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ID: 4139581 pcs
thumb image of 14.6ct Round Cabochon Greenish Golden Cat's Eye Apatite (ID: 413958)
14.61 ct Cat's Eye Apatite
13.3 mm
$ 146.10
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ID: 3983641 pcs
thumb image of 15.7ct Oval Facet Greenish Golden Apatite (ID: 398364)
15.65 ct Apatite
18.8 x 13.5 mm
$ 745.10
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ID: 4849251 pcs
thumb image of 15.9ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484925)
15.90 ct Mystic Topaz
15.9 x 12.1 mm
$ 95.40
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ID: 4073851 pcs
thumb image of 14.9ct Oval Facet Greenish Golden Apatite (ID: 407385)
14.93 ct Apatite
16.2 x 13.4 mm
$ 619.15
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ID: 4849261 pcs
thumb image of 15.4ct Octagon Step Cut Purplish Pink Mystic Topaz (ID: 484926)
15.37 ct Mystic Topaz
15.9 x 11.9 mm
$ 138.33
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ID: 4947001 pcs
thumb image of 15.1ct Oval Cabochon Multicolor Coral (ID: 494700)
15.10 ct Coral
23.6 x 18.1 mm
$ 42.73
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15 Carat Gems
Buy gems by weight. Shop from our extensive range of beautiful, natural 15-carat gems. Browse the largest selection of natural loose colored gemstones available in 15 carats. Our large gemstone selection includes many popular gem types, such as amethyst, citrine, topaz and turquoise, and lesser-known gems, including ruby-zoisite, 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 15-carat tourmaline gems. Select 'multicolor' to shop for 15-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