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You Selected (832): Round Shape 8 mm Gems Clear All
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ID: 4430882 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 443088)
3.70 ct Smoky Quartz
8 mm
$ 7.40
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ID: 4400621 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440062)
1.87 ct Smoky Quartz
8 mm
$ 2.80
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ID: 4740291 pcs
thumb image of 1.8ct Round Facet Red Strawberry Quartz (ID: 474029)
1.84 ct Strawberry Quartz
8.1 mm
$ 12.88
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ID: 4002431 pcs
thumb image of 2.4ct Round Cabochon Cream Moonstone (ID: 400243)
2.43 ct Moonstone
8.2 mm
$ 24.30
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ID: 4691245 pcs
thumb image of 19.1ct Drilled Sphere Gold Brown Tiger's Eye (ID: 469124)
19.08 ct Tiger's Eye
8 mm
$ 13.93
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ID: 4287074 pcs
thumb image of 5.9ct Round Checkerboard Brown Smoky Quartz (ID: 428707)
5.86 ct Smoky Quartz
7.9 mm
$ 11.72
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ID: 4374511 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 437451)
1.94 ct Smoky Quartz
8 mm
$ 2.91
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ID: 4399512 pcs
thumb image of 3.5ct Round Checkerboard Brown Smoky Quartz (ID: 439951)
3.52 ct Smoky Quartz
7.9 mm
$ 5.28
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ID: 3670542 pcs
thumb image of 3.8ct Round Checkerboard Green Prehnite (ID: 367054)
3.76 ct Prehnite
7.9 mm
$ 18.80
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ID: 4402861 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440286)
1.94 ct Smoky Quartz
8.2 mm
$ 2.91
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ID: 4003901 pcs
thumb image of 2.3ct Round Cabochon Cream Moonstone (ID: 400390)
2.28 ct Moonstone
8.2 mm
$ 22.80
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ID: 4371292 pcs
thumb image of 3.8ct Round Checkerboard Brown Smoky Quartz (ID: 437129)
3.77 ct Smoky Quartz
7.9 mm
$ 5.66
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ID: 4431883 pcs
thumb image of 6ct Round Checkerboard Brown Smoky Quartz (ID: 443188)
5.98 ct Smoky Quartz
7.9 mm
$ 11.96
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ID: 4713971 pcs
thumb image of 2.4ct Round Cabochon Green Jadeite (ID: 471397)
2.43 ct Jadeite
8 mm
$ 7.29
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ID: 4740251 pcs
thumb image of 2.1ct Round Facet Red Strawberry Quartz (ID: 474025)
2.05 ct Strawberry Quartz
8.1 mm
$ 14.35
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ID: 4285292 pcs
thumb image of 3.5ct Round Checkerboard Brown Smoky Quartz (ID: 428529)
3.49 ct Smoky Quartz
8.1 mm
$ 6.98
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ID: 4431181 pcs
thumb image of 1.6ct Round Checkerboard Brown Smoky Quartz (ID: 443118)
1.55 ct Smoky Quartz
8 mm
$ 3.10
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ID: 4745381 pcs
thumb image of 1.8ct Round Cabochon Colorless Golden Rutile Quartz (ID: 474538)
1.81 ct Rutile Quartz
7.9 mm
$ 3.62
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ID: 4740261 pcs
thumb image of 2.1ct Round Facet Red Strawberry Quartz (ID: 474026)
2.06 ct Strawberry Quartz
8 mm
$ 14.42
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ID: 4007335 pcs
thumb image of 7.6ct Round Checkerboard Brown Smoky Quartz (ID: 400733)
7.61 ct Smoky Quartz
8 mm
$ 19.03
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ID: 4429891 pcs
thumb image of 1.6ct Round Checkerboard Brown Smoky Quartz (ID: 442989)
1.60 ct Smoky Quartz
7.9 mm
$ 3.20
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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