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You Selected (1017): Round Shape 8 mm Gems Clear All
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ID: 3837412 pcs
thumb image of 3.4ct Round Facet Yellow Golden Citrine (ID: 383741)
3.39ct Citrine
8.06 x 4.96mm
USD 23.73
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ID: 4285682 pcs
thumb image of 3.1ct Round Checkerboard Brown Smoky Quartz (ID: 428568)
3.12ct Smoky Quartz
7.87 x 4.86mm
USD 6.24
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ID: 4428392 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 442839)
3.60ct Smoky Quartz
8.02 x 5.54mm
USD 7.20
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ID: 4401951 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440195)
1.91ct Smoky Quartz
8.26 x 5.53mm
USD 2.86
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ID: 4282521 pcs
thumb image of 1.7ct Round Checkerboard Brown Smoky Quartz (ID: 428252)
1.72ct Smoky Quartz
7.85 x 5.68mm
USD 3.44
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ID: 4281291 pcs
thumb image of 2ct Round Checkerboard Brown Smoky Quartz (ID: 428129)
1.98ct Smoky Quartz
7.99 x 6.06mm
USD 3.96
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ID: 4371282 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 437128)
3.64ct Smoky Quartz
8.00 x 5.72mm
USD 5.46
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ID: 4373232 pcs
thumb image of 3.5ct Round Checkerboard Brown Smoky Quartz (ID: 437323)
3.51ct Smoky Quartz
7.95 x 5.51mm
USD 5.26
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ID: 4429851 pcs
thumb image of 1.5ct Round Checkerboard Brown Smoky Quartz (ID: 442985)
1.54ct Smoky Quartz
7.74 x 5.28mm
USD 3.08
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ID: 3497012 pcs
thumb image of 7ct Drilled Sphere Silver Pink Pearl (ID: 349701)
6.97ct Pearl
7.97mm
USD 38.34
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ID: 4398182 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 439818)
3.69ct Smoky Quartz
8.11 x 5.71mm
USD 5.54
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ID: 3251871 pcs
thumb image of 3.2ct Drilled Sphere Cream Pink Pearl (ID: 325187)
3.21ct Pearl
7.87mm
USD 17.66
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ID: 4428282 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 442828)
3.55ct Smoky Quartz
8.10 x 5.37mm
USD 7.10
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ID: 4429901 pcs
thumb image of 1.5ct Round Checkerboard Brown Smoky Quartz (ID: 442990)
1.49ct Smoky Quartz
7.70 x 5.02mm
USD 2.98
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ID: 4371242 pcs
thumb image of 3.5ct Round Checkerboard Brown Smoky Quartz (ID: 437124)
3.48ct Smoky Quartz
8.08 x 5.22mm
USD 5.22
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ID: 4002461 pcs
thumb image of 2.9ct Round Cabochon Cream Moonstone (ID: 400246)
2.94ct Moonstone
8.19 x 5.53mm
USD 29.40
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ID: 4284002 pcs
thumb image of 3.9ct Round Checkerboard Brown Smoky Quartz (ID: 428400)
3.88ct Smoky Quartz
7.91 x 5.85mm
USD 7.76
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ID: 4059171 pcs
thumb image of 1.1ct Round Facet Orange Fire Opal (ID: 405917)
1.10ct Fire Opal
7.96 x 5.56mm
USD 25.94
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ID: 4027682 pcs
thumb image of 4.2ct Round Facet Purplish Pink Mystic Topaz (ID: 402768)
4.20ct Mystic Topaz
8.04 x 4.39mm
USD 36.92
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ID: 4368932 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 436893)
3.62ct Smoky Quartz
7.95 x 5.75mm
USD 5.43
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ID: 4371332 pcs
thumb image of 3.8ct Round Checkerboard Brown Smoky Quartz (ID: 437133)
3.82ct Smoky Quartz
8.01 x 5.91mm
USD 5.73
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Round Shape 8 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 8 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