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You Selected (989): Round Shape 8 mm Gems Clear All
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ID: 3888882 pcs
thumb image of 4.6ct Round Facet White Topaz (ID: 388888)
4.57ct Topaz
7.68 x 5.33mm
USD 22.85
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ID: 4279622 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 427962)
3.55ct Smoky Quartz
7.96 x 5.43mm
USD 7.10
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ID: 4287042 pcs
thumb image of 3.5ct Round Checkerboard Brown Smoky Quartz (ID: 428704)
3.52ct Smoky Quartz
8.04 x 5.48mm
USD 7.04
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ID: 4285712 pcs
thumb image of 3.8ct Round Checkerboard Brown Smoky Quartz (ID: 428571)
3.77ct Smoky Quartz
7.99 x 5.86mm
USD 7.54
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ID: 4373142 pcs
thumb image of 3.9ct Round Checkerboard Brown Smoky Quartz (ID: 437314)
3.89ct Smoky Quartz
8.15 x 5.90mm
USD 5.84
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ID: 4429582 pcs
thumb image of 3.6ct Round Checkerboard Brown Smoky Quartz (ID: 442958)
3.62ct Smoky Quartz
7.87 x 5.57mm
USD 7.24
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ID: 3244971 pcs
thumb image of 3.4ct Drilled Sphere Silver Pink Pearl (ID: 324497)
3.37ct Pearl
7.90mm
USD 18.54
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ID: 4375401 pcs
thumb image of 1.6ct Round Checkerboard Brown Smoky Quartz (ID: 437540)
1.64ct Smoky Quartz
7.78 x 5.24mm
USD 2.46
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ID: 3678562 pcs
thumb image of 3.9ct Round Cabochon Green Prehnite (ID: 367856)
3.88ct Prehnite
7.68 x 4.36mm
USD 19.24
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ID: 4428342 pcs
thumb image of 2.7ct Round Checkerboard Brown Smoky Quartz (ID: 442834)
2.73ct Smoky Quartz
7.90 x 4.13mm
USD 5.46
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ID: 4397492 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 439749)
3.71ct Smoky Quartz
8.17 x 5.34mm
USD 5.56
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ID: 3252511 pcs
thumb image of 3.3ct Drilled Sphere Pinkish Silver Pearl (ID: 325251)
3.31ct Pearl
7.78mm
USD 18.21
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ID: 4326861 pcs
thumb image of 2.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432686)
2.34ct Hessonite Garnet
8.15 x 4.86mm
USD 29.95
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ID: 4399522 pcs
thumb image of 3.7ct Round Checkerboard Brown Smoky Quartz (ID: 439952)
3.66ct Smoky Quartz
7.91 x 5.80mm
USD 5.49
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ID: 4002901 pcs
thumb image of 2.1ct Round Cabochon Cream Moonstone (ID: 400290)
2.06ct Moonstone
7.80 x 4.67mm
USD 20.60
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ID: 3383992 pcs
thumb image of 8.7ct Spherical Swiss Blue Topaz (ID: 338399)
8.70ct Topaz
7.87mm
USD 64.21
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ID: 4428292 pcs
thumb image of 2.9ct Round Checkerboard Brown Smoky Quartz (ID: 442829)
2.86ct Smoky Quartz
7.99 x 4.24mm
USD 5.72
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ID: 4431241 pcs
thumb image of 1.9ct Round Checkerboard Brown Smoky Quartz (ID: 443124)
1.88ct Smoky Quartz
7.95 x 5.78mm
USD 3.76
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ID: 4372162 pcs
thumb image of 4ct Round Checkerboard Brown Smoky Quartz (ID: 437216)
4.01ct Smoky Quartz
8.01 x 6.16mm
USD 6.02
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ID: 3703804 pcs
thumb image of 10.3ct Round Cabochon Blue Lapis Lazuli (ID: 370380)
10.30ct Lapis Lazuli
8.04 x 4.43mm
USD 16.79
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ID: 3251921 pcs
thumb image of 3.4ct Drilled Sphere Silver Pink Pearl (ID: 325192)
3.37ct Pearl
7.90mm
USD 18.54
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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