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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (822): Round Shape 8 mm Gems Clear All
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ID: 4428552 pcs
thumb image of 3.2ct Round Checkerboard Brown Smoky Quartz (ID: 442855)
3.21 ct Smoky Quartz
8 mm
$ 6.42
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ID: 4230085 pcs
thumb image of 18ct Drilled Sphere Multicolor Rutile Quartz (ID: 423008)
17.95 ct Rutile Quartz
8 mm
$ 17.95
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ID: 3207474 pcs
thumb image of 13.7ct Drilled Sphere Pink Pearl (ID: 320747)
13.66 ct Pearl
7.9 mm
$ 75.13
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ID: 4691152 pcs
thumb image of 7.8ct Drilled Sphere Gold Brown Tiger's Eye (ID: 469115)
7.76 ct Tiger's Eye
7.9 mm
$ 5.66
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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: 4428782 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 442878)
3.71 ct Smoky Quartz
8.1 mm
$ 7.42
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ID: 4402011 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440201)
1.87 ct Smoky Quartz
8 mm
$ 2.80
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ID: 4007303 pcs
thumb image of 5ct Round Checkerboard Brown Smoky Quartz (ID: 400730)
5.01 ct Smoky Quartz
8 mm
$ 12.52
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ID: 4402901 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440290)
1.87 ct Smoky Quartz
7.9 mm
$ 2.80
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ID: 4369972 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 436997)
3.69 ct Smoky Quartz
8 mm
$ 5.54
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ID: 4691225 pcs
thumb image of 19.8ct Drilled Sphere Gold Brown Tiger's Eye (ID: 469122)
19.78 ct Tiger's Eye
8 mm
$ 14.44
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ID: 4403621 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440362)
1.89 ct Smoky Quartz
7.9 mm
$ 2.84
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ID: 4691272 pcs
thumb image of 7.2ct Drilled Sphere Green Aventurine (ID: 469127)
7.23 ct Aventurine
8 mm
$ 7.59
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ID: 4283382 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 428338)
3.68 ct Smoky Quartz
7.9 mm
$ 7.36
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ID: 4691312 pcs
thumb image of 7.4ct Drilled Sphere Green Aventurine (ID: 469131)
7.40 ct Aventurine
8.1 mm
$ 7.77
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ID: 4691185 pcs
thumb image of 19.7ct Drilled Sphere Gold Brown Tiger's Eye (ID: 469118)
19.70 ct Tiger's Eye
8.2 mm
$ 14.38
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ID: 4402871 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 440287)
1.90 ct Smoky Quartz
8 mm
$ 2.85
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ID: 4691292 pcs
thumb image of 7.2ct Drilled Sphere Green Aventurine (ID: 469129)
7.18 ct Aventurine
8.1 mm
$ 7.54
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ID: 4691302 pcs
thumb image of 7.1ct Drilled Sphere Green Aventurine (ID: 469130)
7.10 ct Aventurine
8.1 mm
$ 7.46
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ID: 4429532 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 442953)
3.58 ct Smoky Quartz
8.1 mm
$ 7.16
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ID: 3618082 pcs
thumb image of 6.9ct Drilled Sphere Silver Pink Pearl (ID: 361808)
6.89 ct Pearl
7.9 mm
$ 34.45
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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