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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (387): Round Shape 4 mm Gems Clear All
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ID: 39071510 pcs
thumb image of 4ct Round Facet Raspberry Red Rhodolite Garnet (ID: 390715)
4.02 ct Rhodolite Garnet
4 mm
$ 196.02
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ID: 4672955 pcs
thumb image of 2.2ct Round Cabochon Red Pyrope Garnet (ID: 467295)
2.23 ct Pyrope Garnet
4.1 mm
$ 15.61
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ID: 2795969 pcs
thumb image of 2.2ct Round Facet Multicolor Andalusite (ID: 279596)
2.18 ct Andalusite
4.1 mm
$ 98.10
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ID: 31083218 pcs
thumb image of 4.2ct Round Facet Brown Orange Andalusite (ID: 310832)
4.23 ct Andalusite
3.9 mm
$ 190.35
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ID: 2556335 pcs
thumb image of 1.4ct Diamond-Cut Golden Green Demantoid Garnet (ID: 255633)
1.44 ct Demantoid Garnet
3.9 mm
$ 129.96
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ID: 4775015 pcs
thumb image of 0.7ct Round Cabochon Yellow Opal (ID: 477501)
0.69 ct Opal
4 mm
$ 14.70
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ID: 4684685 pcs
thumb image of 1.1ct Round Facet Blue Apatite (ID: 468468)
1.10 ct Apatite
4 mm
$ 33.00
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ID: 38188220 pcs
thumb image of 4.4ct Diamond-Cut Multicolor Andalusite (ID: 381882)
4.43 ct Andalusite
3.9 mm
$ 177.60
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ID: 2060159 pcs
thumb image of 2.3ct Round Facet Multicolor Andalusite (ID: 206015)
2.27 ct Andalusite
4 mm
$ 102.15
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ID: 4674685 pcs
thumb image of 2.2ct Round Cabochon Red Pyrope Garnet (ID: 467468)
2.17 ct Pyrope Garnet
4.1 mm
$ 15.19
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ID: 4546025 pcs
thumb image of 1.6ct Round Facet Green/Pink Color-Change Diaspore (ID: 454602)
1.56 ct Color-Change Diaspore
4.1 mm
$ 49.92
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ID: 4602814 pcs
thumb image of 1.6ct Diamond-Cut Orange Zircon (ID: 460281)
1.58 ct Zircon
4.1 mm
$ 28.00
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ID: 3463255 pcs
thumb image of 2ct Round Facet Golden Brown to Orange Color-Change Garnet (ID: 346325)
2.04 ct Color-Change Garnet
4 mm
$ 183.60
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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: 4672965 pcs
thumb image of 2.1ct Round Cabochon Red Pyrope Garnet (ID: 467296)
2.13 ct Pyrope Garnet
4.1 mm
$ 14.91
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ID: 4682946 pcs
thumb image of 1.4ct Round Facet Violet Blue Tanzanite (ID: 468294)
1.38 ct Tanzanite
4 mm
$ 69.00
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ID: 3909689 pcs
thumb image of 2.4ct Round Facet Orangey Brownish Andalusite (ID: 390968)
2.44 ct Andalusite
4.1 mm
$ 119.41
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ID: 4736504 pcs
thumb image of 0.9ct Diamond-Cut Green Tsavorite Garnet (ID: 473650)
0.88 ct Tsavorite Garnet
3.9 mm
$ 128.90
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ID: 4684624 pcs
thumb image of 1.1ct Round Facet Blue Apatite (ID: 468462)
1.05 ct Apatite
4 mm
$ 31.50
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ID: 4674625 pcs
thumb image of 1.8ct Round Cabochon Red Pyrope Garnet (ID: 467462)
1.84 ct Pyrope Garnet
4.1 mm
$ 12.88
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ID: 4684455 pcs
thumb image of 1ct Round Facet Violet Blue Tanzanite (ID: 468445)
1.02 ct Tanzanite
3.9 mm
$ 40.80
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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