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You Selected (4091): 5 mm Gemstones Clear All
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ID: 4581532 pcs
thumb image of 1ct Oval Facet Golden Green Demantoid Garnet (ID: 458153)
0.98 ct Demantoid Garnet
4.9 x 4.1 mm
$ 161.21
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ID: 4406282 pcs
thumb image of 1.5ct Round Facet Pinkish Rose Rhodolite Garnet (ID: 440628)
1.45 ct Rhodolite Garnet
5.1 mm
$ 29.00
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ID: 4016872 pcs
thumb image of 1.5ct Round Facet Orange Spessartite Garnet (ID: 401687)
1.46 ct Spessartite Garnet
5.1 mm
$ 45.26
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ID: 3412504 pcs
thumb image of 1.1ct Pear Facet Blue White Rainbow Moonstone (ID: 341250)
1.10 ct Rainbow Moonstone
4.9 x 4.8 mm
$ 18.70
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ID: 4143358 pcs
thumb image of 1.6ct Pear Facet Violet Blue Tanzanite (ID: 414335)
1.57 ct Tanzanite
5 x 3.1 mm
$ 54.95
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ID: 4312134 pcs
thumb image of 2.6ct Square Facet Pinkish Rose Rhodolite Garnet (ID: 431213)
2.55 ct Rhodolite Garnet
4.9 x 4.9 mm
$ 20.37
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ID: 4511732 pcs
thumb image of 1.1ct Square Step-Cut Red Pyrope Garnet (ID: 451173)
1.11 ct Pyrope Garnet
4.8 x 4.7 mm
$ 7.77
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ID: 4587452 pcs
thumb image of 1.1ct Oval Facet Green Demantoid Garnet (ID: 458745)
1.07 ct Demantoid Garnet
5.1 x 4.2 mm
$ 176.02
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ID: 4512872 pcs
thumb image of 1.6ct Square Step-Cut Red Pyrope Garnet (ID: 451287)
1.57 ct Pyrope Garnet
4.9 x 4.8 mm
$ 10.99
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ID: 4415232 pcs
thumb image of 1.2ct Diamond-Cut Blue Sapphire (ID: 441523)
1.18 ct Sapphire
5.1 mm
$ 354.00
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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: 45437510 pcs
thumb image of 2.2ct Pear Facet Violet Blue Tanzanite (ID: 454375)
2.19 ct Tanzanite
5.1 x 3.1 mm
$ 76.65
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ID: 4509834 pcs
thumb image of 3ct Square Step-Cut Red Pyrope Garnet (ID: 450983)
3.00 ct Pyrope Garnet
5.1 x 5 mm
$ 21.00
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ID: 4132672 pcs
thumb image of 1.3ct Round Facet Raspberry Red Rhodolite Garnet (ID: 413267)
1.32 ct Rhodolite Garnet
5.1 mm
$ 26.40
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ID: 4019012 pcs
thumb image of 1.3ct Round Facet Orange Spessartite Garnet (ID: 401901)
1.33 ct Spessartite Garnet
4.9 mm
$ 41.23
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ID: 37994910 pcs
thumb image of 4.1ct Pear Facet Red Orange Sapphire (ID: 379949)
4.06 ct Sapphire
5 x 4 mm
$ 101.50
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ID: 3393574 pcs
thumb image of 1.1ct Pear Facet Blue White Rainbow Moonstone (ID: 339357)
1.12 ct Rainbow Moonstone
5.2 x 5 mm
$ 19.04
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ID: 4322155 pcs
thumb image of 2.4ct Trillion Facet Pinkish Rose Rhodolite Garnet (ID: 432215)
2.43 ct Rhodolite Garnet
5.2 x 5.1 mm
$ 19.44
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ID: 4512482 pcs
thumb image of 1.1ct Princess-Cut Red Pyrope Garnet (ID: 451248)
1.13 ct Pyrope Garnet
4.9 x 4.9 mm
$ 7.91
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ID: 3391264 pcs
thumb image of 1.1ct Pear Facet Blue White Rainbow Moonstone (ID: 339126)
1.13 ct Rainbow Moonstone
4.9 x 4.9 mm
$ 19.21
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ID: 3395654 pcs
thumb image of 1.7ct Pear Facet Blue White Rainbow Moonstone (ID: 339565)
1.69 ct Rainbow Moonstone
5.2 x 5.2 mm
$ 28.73
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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