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ID: 4616811 pcs
thumb image of 15.9ct Octagon Step Cut Bi-Color Ametrine (ID: 461681)
15.90 ct Ametrine
13.2 x 14.3 mm
$ 111.30
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ID: 4032061 pcs
thumb image of 16.1ct Oval Cabochon Blue Hemimorphite (ID: 403206)
16.08 ct Hemimorphite
18.2 x 12.6 mm
$ 342.18
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ID: 3807121 pcs
thumb image of 16.9ct Cushion Cabochon Pink Smithsonite (ID: 380712)
16.90 ct Smithsonite
14.5 x 13.2 mm
$ 455.29
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ID: 3375481 pcs
thumb image of 16.8ct Octagon / Scissor Cut Blue Zircon (ID: 337548)
16.80 ct Zircon
17 x 9.4 mm
$ 5078.84
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ID: 4170271 pcs
thumb image of 16.9ct Oval Cabochon Cream Star Moonstone (ID: 417027)
16.91 ct Star Moonstone
15.7 x 13.7 mm
$ 67.64
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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: 3877761 pcs
thumb image of 16ct Oval Portuguese-Cut Bi-Color Ametrine (ID: 387776)
15.97 ct Ametrine
18 x 12.9 mm
$ 111.79
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ID: 4043921 pcs
thumb image of 15.5ct Oval Cabochon Green Chrysoprase (ID: 404392)
15.51 ct Chrysoprase
18.4 x 15.2 mm
$ 62.04
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ID: 3804011 pcs
thumb image of 15.8ct Oval Cabochon Yellow Fire Opal (ID: 380401)
15.79 ct Fire Opal
22.3 x 14.9 mm
$ 341.22
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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: 3804061 pcs
thumb image of 15.9ct Pear Cabochon Yellow Fire Opal (ID: 380406)
15.86 ct Fire Opal
28.8 x 14.2 mm
$ 342.73
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ID: 4723151 pcs
thumb image of 16.1ct Oval Cabochon Multicolor Jasper (ID: 472315)
16.11 ct Jasper
26.2 x 18.1 mm
$ 6.77
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ID: 4622141 pcs
thumb image of 16.8ct Oval Cabochon White Opal (ID: 462214)
16.83 ct Opal
20.8 x 16.6 mm
$ 677.58
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ID: 4070941 pcs
thumb image of 15.5ct Oval Checkerboard Bi-Color Ametrine (ID: 407094)
15.54 ct Ametrine
17.7 x 13.9 mm
$ 93.24
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ID: 3921821 pcs
thumb image of 16.9ct Asscher Cut Pink Rose Quartz (ID: 392182)
16.88 ct Rose Quartz
15.9 x 15.8 mm
$ 84.40
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ID: 4338341 pcs
thumb image of 16.6ct Pear Cabochon Gold Sheen Obsidian (ID: 433834)
16.62 ct Obsidian
26 x 15 mm
$ 16.62
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ID: 4350851 pcs
thumb image of 16.6ct Oval Cabochon Gold Sheen Obsidian (ID: 435085)
16.64 ct Obsidian
25.6 x 17.6 mm
$ 16.64
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ID: 4527311 pcs
thumb image of 15.8ct Trillion Cabochon Multicolor Ammolite (ID: 452731)
15.83 ct Ammolite
29.6 x 14.9 mm
$ 385.14
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ID: 4147021 pcs
thumb image of 16.8ct Princess-Cut Pink Rose Quartz (ID: 414702)
16.77 ct Rose Quartz
14.6 x 14.5 mm
$ 83.85
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ID: 4720341 pcs
thumb image of 16.3ct Oval Cabochon Bluish Green Fluorite (ID: 472034)
16.32 ct Fluorite
19.6 x 13.1 mm
$ 65.28
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ID: 4701761 pcs
thumb image of 15.8ct Carved Flower Brown Smoky Quartz (ID: 470176)
15.83 ct Smoky Quartz
16.2 x 16 mm
$ 55.41
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16 Carat Gems
Buy gems by weight. Shop from our extensive range of beautiful, natural 16-carat gems. Browse the largest selection of natural loose colored gemstones available in 16 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 16-carat tourmaline gems. Select 'multicolor' to shop for 16-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