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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (4279): 5 mm Gemstones Clear All
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ID: 4451802 pcs
thumb image of 1.8ct Round Facet Yellow Golden Sapphire (ID: 445180)
1.82 ct Sapphire
5.1 mm
$ 91.29
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ID: 4408632 pcs
thumb image of 1.4ct Round Facet Pinkish Rose Rhodolite Garnet (ID: 440863)
1.35 ct Rhodolite Garnet
5.1 mm
$ 27.00
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ID: 4361562 pcs
thumb image of 1.4ct Round Facet Orange Spessartite Garnet (ID: 436156)
1.42 ct Spessartite Garnet
5 mm
$ 42.60
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ID: 4889834 pcs
thumb image of 2.2ct Round Facet Green Chrome Diopside (ID: 488983)
2.17 ct Chrome Diopside
5 mm
$ 36.33
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ID: 4586842 pcs
thumb image of 0.9ct Oval Facet Golden Green Demantoid Garnet (ID: 458684)
0.90 ct Demantoid Garnet
5 x 4 mm
$ 148.05
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ID: 4363484 pcs
thumb image of 2.7ct Round Facet Orange Spessartite Garnet (ID: 436348)
2.73 ct Spessartite Garnet
4.9 mm
$ 81.90
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ID: 4887714 pcs
thumb image of 1.5ct Oval Facet Blue Apatite (ID: 488771)
1.50 ct Apatite
5.1 x 4 mm
$ 30.08
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ID: 4772116 pcs
thumb image of 3ct Round Facet Orange Carnelian (ID: 477211)
2.95 ct Carnelian
5.1 mm
$ 11.80
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ID: 4130896 pcs
thumb image of 1.7ct Pear Facet Violet Blue Tanzanite (ID: 413089)
1.65 ct Tanzanite
5.1 x 3.8 mm
$ 57.75
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ID: 35589410 pcs
thumb image of 3.6ct Oval Facet Violet Amethyst (ID: 355894)
3.60 ct Amethyst
5.1 x 4 mm
$ 18.00
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ID: 4785391 pcs
thumb image of 0.3ct Oval Facet Green/Pink Color-Change Diaspore (ID: 478539)
0.31 ct Color-Change Diaspore
5.2 x 4 mm
$ 9.93
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ID: 4314362 pcs
thumb image of 1.2ct Square Facet Pinkish Rose Rhodolite Garnet (ID: 431436)
1.24 ct Rhodolite Garnet
5 x 5 mm
$ 9.91
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ID: 4773364 pcs
thumb image of 1.4ct Round Cabochon White Opal (ID: 477336)
1.39 ct Opal
5.1 mm
$ 29.62
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ID: 48256020 pcs
thumb image of 4.4ct Pear Facet Green Tsavorite Garnet (ID: 482560)
4.39 ct Tsavorite Garnet
5 x 3 mm
$ 219.50
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ID: 4587542 pcs
thumb image of 0.9ct Oval Facet Green Demantoid Garnet (ID: 458754)
0.91 ct Demantoid Garnet
4.9 x 4 mm
$ 149.70
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ID: 3781475 pcs
thumb image of 3.1ct Diamond-Cut White Zircon (ID: 378147)
3.10 ct Zircon
5 mm
$ 46.50
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ID: 4888666 pcs
thumb image of 2.2ct Oval Facet Blue Apatite (ID: 488866)
2.23 ct Apatite
5.1 x 4.1 mm
$ 44.71
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ID: 2348051 pcs
thumb image of 0.5ct Oval Facet Golden Green Demantoid Garnet (ID: 234805)
0.49 ct Demantoid Garnet
5.1 x 4.1 mm
$ 122.50
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ID: 2304512 pcs
thumb image of 0.7ct Oval Facet Golden Green Demantoid Garnet (ID: 230451)
0.74 ct Demantoid Garnet
5.1 x 3.9 mm
$ 185.00
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ID: 4534451 pcs
thumb image of 0.7ct Round Facet Yellow Golden Sapphire (ID: 453445)
0.73 ct Sapphire
5.1 mm
$ 42.64
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ID: 4893596 pcs
thumb image of 2.8ct Round Facet Lively Green Peridot (ID: 489359)
2.76 ct Peridot
4.9 mm
$ 41.40
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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