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ID: 3815591 pcs
thumb image of 19.9ct Round Facet Green/Pink Color-Change Diaspore (ID: 381559)
19.90 ct Color-Change Diaspore
15.4 mm
$ 6500.92
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ID: 4622011 pcs
thumb image of 19.7ct Oval Cabochon Multicolor Opal (ID: 462201)
19.73 ct Opal
20.3 x 17.5 mm
$ 794.33
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ID: 4616291 pcs
thumb image of 20.6ct Oval Cabochon Mocha Moonstone (ID: 461629)
20.59 ct Moonstone
22.2 x 16.2 mm
$ 24.71
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ID: 4754661 pcs
thumb image of 20.6ct Oval Cabochon Green Fluorite (ID: 475466)
20.63 ct Fluorite
17 x 14.3 mm
$ 82.52
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ID: 4714321 pcs
thumb image of 19.9ct Fancy Cabochon Multicolor Rhodochrosite (ID: 471432)
19.85 ct Rhodochrosite
17 x 17.2 mm
$ 16.48
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ID: 4194151 pcs
thumb image of 20.3ct Oval Cabochon Golden Green Cat's Eye Apatite (ID: 419415)
20.30 ct Cat's Eye Apatite
19 x 13 mm
$ 203.00
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ID: 3632641 pcs
thumb image of 20.4ct Round Cabochon Purple Amethyst (ID: 363264)
20.41 ct Amethyst
18.1 mm
$ 102.05
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ID: 3932251 pcs
thumb image of 20.1ct Round Cabochon Violet Amethyst (ID: 393225)
20.07 ct Amethyst
18.7 mm
$ 100.35
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ID: 4724481 pcs
thumb image of 20.3ct Oval Facet Red Strawberry Quartz (ID: 472448)
20.31 ct Strawberry Quartz
19.3 x 15.5 mm
$ 142.17
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ID: 3932271 pcs
thumb image of 19.9ct Round Cabochon Violet Amethyst (ID: 393227)
19.94 ct Amethyst
17.9 mm
$ 99.70
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ID: 4721181 pcs
thumb image of 19.2ct Oval Facet Red Strawberry Quartz (ID: 472118)
19.24 ct Strawberry Quartz
19.6 x 15.5 mm
$ 134.68
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ID: 3914631 pcs
thumb image of 19.9ct Round Cabochon Violet Amethyst (ID: 391463)
19.86 ct Amethyst
18 mm
$ 99.30
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ID: 4379451 pcs
thumb image of 20.9ct Pear Facet Pink Kunzite (ID: 437945)
20.92 ct Kunzite
17.5 x 16.7 mm
$ 418.40
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ID: 3331161 pcs
thumb image of 19.3ct Pear Facet Bi-Color Ametrine (ID: 333116)
19.29 ct Ametrine
22.3 x 15.9 mm
$ 192.90
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ID: 3853491 pcs
thumb image of 20.8ct Oval Cabochon Greenish Golden Cat's Eye Apatite (ID: 385349)
20.82 ct Cat's Eye Apatite
17.9 x 15.2 mm
$ 416.40
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ID: 3932231 pcs
thumb image of 19.8ct Round Cabochon Violet Amethyst (ID: 393223)
19.82 ct Amethyst
18 mm
$ 99.10
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ID: 4379531 pcs
thumb image of 20.5ct Pear Facet Pink Kunzite (ID: 437953)
20.48 ct Kunzite
18.2 x 14.8 mm
$ 409.60
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ID: 3795231 pcs
thumb image of 20.3ct Oval Cabochon Multicolor Hawk's Eye (ID: 379523)
20.32 ct Hawk's Eye
22.3 x 16.8 mm
$ 50.80
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ID: 4379511 pcs
thumb image of 19.8ct Oval Facet Pink Kunzite (ID: 437951)
19.84 ct Kunzite
18 x 11.8 mm
$ 396.80
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ID: 4743591 pcs
thumb image of 19.3ct Oval Cabochon Green Bloodstone (ID: 474359)
19.27 ct Bloodstone
19.5 x 15.8 mm
$ 57.81
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ID: 3840101 pcs
thumb image of 20.4ct Octagon Facet Golden Apatite (ID: 384010)
20.43 ct Apatite
17.5 x 13.2 mm
$ 612.90
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20 Carat Gems
Buy gems by carat weight. Shop from our extensive range of beautiful, natural 20 carat gems. Browse the largest selection of natural loose colored gemstones available in 20 carats. Our wide gemstone selection includes many popular gem types, such as amethyst, citrine, rose quartz 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 'tiger's eye' to see all of our 20-carat tiger's eye gems. Select 'violet' to shop for 20-carat purple 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