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You Selected (4214): 5 mm Gemstones Clear All
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ID: 35070110 pcs
thumb image of 2.8ct Pear Facet Blue White Rainbow Moonstone (ID: 350701)
2.84 ct Rainbow Moonstone
4.9 x 4.8 mm
$ 48.39
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ID: 4690374 pcs
thumb image of 2.2ct Round Facet Lively Green Peridot (ID: 469037)
2.15 ct Peridot
5 mm
$ 15.05
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ID: 4645254 pcs
thumb image of 1.9ct Oval Facet Pink Red Ruby (ID: 464525)
1.90 ct Ruby
4.9 x 4 mm
$ 47.50
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ID: 4581592 pcs
thumb image of 1.1ct Oval Facet Golden Green Demantoid Garnet (ID: 458159)
1.05 ct Demantoid Garnet
5.1 x 4.2 mm
$ 172.72
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ID: 4132166 pcs
thumb image of 1.8ct Pear Facet Violet Blue Tanzanite (ID: 413216)
1.77 ct Tanzanite
5 x 4 mm
$ 61.95
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ID: 4313654 pcs
thumb image of 2.4ct Square Facet Pinkish Rose Rhodolite Garnet (ID: 431365)
2.37 ct Rhodolite Garnet
4.9 x 4.9 mm
$ 18.94
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ID: 4446731 pcs
thumb image of 0.5ct Oval Facet Green to Red-Pink Color-Change Garnet (ID: 444673)
0.53 ct Color-Change Garnet
5 x 4.4 mm
$ 21.30
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ID: 4292012 pcs
thumb image of 0.9ct Round Facet Yellow Golden Citrine (ID: 429201)
0.94 ct Citrine
5 mm
$ 4.70
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ID: 4731611 pcs
thumb image of 0.7ct Round Facet Yellow Sapphire (ID: 473161)
0.66 ct Sapphire
5.1 mm
$ 75.96
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ID: 4545094 pcs
thumb image of 1.9ct Round Facet Green/Pink Color-Change Diaspore (ID: 454509)
1.93 ct Color-Change Diaspore
4.9 mm
$ 61.76
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ID: 4408362 pcs
thumb image of 1.1ct Round Facet Pinkish Rose Rhodolite Garnet (ID: 440836)
1.09 ct Rhodolite Garnet
5.2 mm
$ 21.80
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ID: 4323246 pcs
thumb image of 2.8ct Trillion Facet Pinkish Rose Rhodolite Garnet (ID: 432324)
2.78 ct Rhodolite Garnet
5.2 x 5.1 mm
$ 22.24
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ID: 4685942 pcs
thumb image of 1ct Round Facet Lively Green Peridot (ID: 468594)
1.03 ct Peridot
4.9 mm
$ 7.21
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ID: 4315142 pcs
thumb image of 1.2ct Square Facet Pinkish Rose Rhodolite Garnet (ID: 431514)
1.21 ct Rhodolite Garnet
4.8 x 4.8 mm
$ 9.67
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ID: 4294002 pcs
thumb image of 0.9ct Round Facet Yellow Golden Citrine (ID: 429400)
0.94 ct Citrine
5 mm
$ 4.70
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ID: 4683503 pcs
thumb image of 1.8ct Round Cabochon Green Blue Apatite (ID: 468350)
1.78 ct Apatite
5 mm
$ 26.70
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ID: 4511042 pcs
thumb image of 1.3ct Square Step-Cut Red Pyrope Garnet (ID: 451104)
1.26 ct Pyrope Garnet
4.9 x 4.9 mm
$ 8.82
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ID: 4316271 pcs
thumb image of 0.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 431627)
0.87 ct Hessonite Garnet
5.1 x 5 mm
$ 15.66
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ID: 4587532 pcs
thumb image of 0.8ct Oval Facet Green Demantoid Garnet (ID: 458753)
0.82 ct Demantoid Garnet
4.9 x 4 mm
$ 134.89
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ID: 4716504 pcs
thumb image of 1.8ct Oval Facet Green Demantoid Garnet (ID: 471650)
1.81 ct Demantoid Garnet
5.1 x 4.1 mm
$ 181.00
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ID: 4410332 pcs
thumb image of 0.9ct Round Facet Yellow Golden Citrine (ID: 441033)
0.93 ct Citrine
5 mm
$ 5.58
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5 mm Gemstones
Buy gems by size in millimeters. Some people by gems by color or prize, 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 sizes and shapes, facet cut and cabochon gems available now in the 5 mm 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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