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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (645): Round Shape 6 mm Gems Clear All
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ID: 3596094 pcs
thumb image of 4.8ct Diamond-Cut White Zircon (ID: 359609)
4.79 ct Zircon
5.9 mm
$ 69.31
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ID: 4444092 pcs
thumb image of 2.2ct Round Facet Swiss Blue Topaz (ID: 444409)
2.16 ct Topaz
6.1 mm
$ 14.10
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ID: 4221152 pcs
thumb image of 1.3ct Round Facet Violet Amethyst (ID: 422115)
1.29 ct Amethyst
5.8 mm
$ 7.74
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ID: 3821091 pcs
thumb image of 1.3ct Round Facet Raspberry Red Rhodolite Garnet (ID: 382109)
1.26 ct Rhodolite Garnet
6.1 mm
$ 53.73
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ID: 3680821 pcs
thumb image of 1.5ct Round Cabochon Green Prehnite (ID: 368082)
1.48 ct Prehnite
6.1 mm
$ 7.34
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ID: 4449032 pcs
thumb image of 2.3ct Round Facet Swiss Blue Topaz (ID: 444903)
2.29 ct Topaz
6.2 mm
$ 14.95
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ID: 4445232 pcs
thumb image of 1.9ct Round Facet Swiss Blue Topaz (ID: 444523)
1.93 ct Topaz
6 mm
$ 12.60
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ID: 4448962 pcs
thumb image of 2.2ct Round Facet Swiss Blue Topaz (ID: 444896)
2.17 ct Topaz
6.1 mm
$ 14.17
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ID: 3589922 pcs
thumb image of 2.3ct Diamond-Cut White Zircon (ID: 358992)
2.29 ct Zircon
6 mm
$ 33.02
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ID: 4345921 pcs
thumb image of 1.3ct Diamond-Cut Orange Zircon (ID: 434592)
1.26 ct Zircon
5.9 mm
$ 25.20
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ID: 4446252 pcs
thumb image of 1.8ct Round Facet Swiss Blue Topaz (ID: 444625)
1.84 ct Topaz
5.9 mm
$ 12.02
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ID: 4003796 pcs
thumb image of 6.1ct Round Cabochon Cream Moonstone (ID: 400379)
6.07 ct Moonstone
6.1 mm
$ 60.70
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ID: 4433741 pcs
thumb image of 1.3ct Round Facet Orange Sapphire (ID: 443374)
1.32 ct Sapphire
6.1 mm
$ 197.33
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ID: 4446212 pcs
thumb image of 1.9ct Round Facet Swiss Blue Topaz (ID: 444621)
1.92 ct Topaz
5.9 mm
$ 12.54
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ID: 4312751 pcs
thumb image of 0.9ct Round Cabochon Multicolor Opal (ID: 431275)
0.89 ct Opal
6.1 mm
$ 17.80
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ID: 4450082 pcs
thumb image of 1.9ct Round Facet Swiss Blue Topaz (ID: 445008)
1.87 ct Topaz
6 mm
$ 12.21
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ID: 3682252 pcs
thumb image of 2.7ct Round Cabochon Green Prehnite (ID: 368225)
2.66 ct Prehnite
6.1 mm
$ 13.19
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ID: 3822691 pcs
thumb image of 1.1ct Round Facet Brown Orange Mali Garnet (ID: 382269)
1.09 ct Mali Garnet
5.9 mm
$ 58.32
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ID: 4449824 pcs
thumb image of 4.1ct Round Facet Swiss Blue Topaz (ID: 444982)
4.14 ct Topaz
6.1 mm
$ 27.03
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ID: 4545921 pcs
thumb image of 1.1ct Round Facet Green/Pink Color-Change Diaspore (ID: 454592)
1.06 ct Color-Change Diaspore
6.2 mm
$ 33.92
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ID: 4322311 pcs
thumb image of 0.4ct Round Cabochon White Opal (ID: 432231)
0.44 ct Opal
5.8 mm
$ 12.32
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Round Shape 6 mm Gems
Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Round shapes, facet cut and cabochon gems available now in 6 mm diameter size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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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