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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (227): Round Shape 4 mm Gems Clear All
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ID: 4152166 pcs
thumb image of 2ct Round Facet Raspberry Red Rhodolite Garnet (ID: 415216)
1.97 ct Rhodolite Garnet
4.1 mm
$ 39.40
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ID: 4026615 pcs
thumb image of 2.3ct Round Facet Orange Spessartite Garnet (ID: 402661)
2.33 ct Spessartite Garnet
4 mm
$ 72.23
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ID: 4367555 pcs
thumb image of 1.9ct Round Facet Orange Spessartite Garnet (ID: 436755)
1.92 ct Spessartite Garnet
4 mm
$ 57.60
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ID: 2226889 pcs
thumb image of 2.3ct Round Facet Multicolor Andalusite (ID: 222688)
2.34 ct Andalusite
4.1 mm
$ 105.30
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ID: 3749725 pcs
thumb image of 1.5ct Diamond-Cut Multicolor Sapphire (ID: 374972)
1.51 ct Sapphire
4 mm
$ 56.10
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ID: 41030810 pcs
thumb image of 2.4ct Round Cabochon Peach Orange Moonstone (ID: 410308)
2.37 ct Moonstone
4.1 mm
$ 4.74
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ID: 26768010 pcs
thumb image of 3.9ct Round Cabochon Lively Green Peridot (ID: 267680)
3.88 ct Peridot
4.1 mm
$ 31.04
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ID: 3737725 pcs
thumb image of 1.9ct Round Facet Purple Pink Sapphire (ID: 373772)
1.86 ct Sapphire
4.1 mm
$ 275.76
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ID: 39071410 pcs
thumb image of 3.8ct Round Facet Raspberry Red Rhodolite Garnet (ID: 390714)
3.75 ct Rhodolite Garnet
4.1 mm
$ 182.85
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ID: 2795849 pcs
thumb image of 2.3ct Round Facet Multicolor Andalusite (ID: 279584)
2.25 ct Andalusite
4.1 mm
$ 101.25
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ID: 4251405 pcs
thumb image of 1.5ct Diamond-Cut Yellow Golden Sapphire (ID: 425140)
1.45 ct Sapphire
3.9 mm
$ 58.00
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ID: 2948124 pcs
thumb image of 1.5ct Round Cabochon Golden Green Chrysoberyl Cat's Eye (ID: 294812)
1.51 ct Chrysoberyl Cat's Eye
4 mm
$ 105.70
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ID: 2977184 pcs
thumb image of 1.3ct Round Facet Multicolor Sapphire (ID: 297718)
1.28 ct Sapphire
4.1 mm
$ 119.68
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ID: 3798199 pcs
thumb image of 3.1ct Round Facet Red Orange Spessartite Garnet (ID: 379819)
3.06 ct Spessartite Garnet
3.9 mm
$ 131.34
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ID: 2795989 pcs
thumb image of 2.1ct Round Facet Multicolor Andalusite (ID: 279598)
2.06 ct Andalusite
4 mm
$ 92.70
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ID: 4122624 pcs
thumb image of 1ct Round Facet Green Emerald (ID: 412262)
0.95 ct Emerald
4 mm
$ 380.00
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ID: 2947754 pcs
thumb image of 1.4ct Round Cabochon Yellowish Green Chrysoberyl Cat's Eye (ID: 294775)
1.42 ct Chrysoberyl Cat's Eye
4 mm
$ 99.40
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ID: 4290202 pcs
thumb image of 0.5ct Round Facet Green Emerald (ID: 429020)
0.46 ct Emerald
4.1 mm
$ 179.40
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ID: 3273755 pcs
thumb image of 1.8ct Round Cabochon Lively Green Peridot (ID: 327375)
1.77 ct Peridot
4.1 mm
$ 14.16
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ID: 3836486 pcs
thumb image of 3ct Round Cabochon Red Almandine Garnet (ID: 383648)
2.98 ct Almandine Garnet
4.1 mm
$ 14.90
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ID: 3221055 pcs
thumb image of 1.6ct Round Facet Greenish Golden Demantoid Garnet (ID: 322105)
1.56 ct Demantoid Garnet
4.1 mm
$ 155.61
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Round Shape 4 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 4 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