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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (620): Round Shape 4 mm Gems Clear All
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ID: 2243569 pcs
2.19ctw Andalusite
3.93mm x 2.16mm
USD 98.55
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ID: 3743794 pcs
1.21ctw Sapphire
4.09mm x 2.57mm
USD 44.66
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ID: 2058089 pcs
2.39ctw Andalusite
4.12mm x 2.90mm
USD 107.55
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ID: 3930484 pcs
1.47ctw Sapphire
4.11mm x 2.87mm
USD 157.70
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ID: 4384736 pcs
1.94ctw Rhodolite Garnet
4.03mm x 2.76mm
USD 15.36
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ID: 4150835 pcs
1.99ctw Rhodolite Garnet
4.10mm x 3.05mm
USD 39.80
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ID: 4250126 pcs
1.73ctw Sapphire
4.04mm x 2.47mm
USD 69.20
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ID: 3254685 pcs
1.59ctw Demantoid Garnet
4.14mm x 2.33mm
USD 183.65
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ID: 26768410 pcs
4.07ctw Peridot
4.13mm x 2.49mm
USD 32.56
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ID: 2795909 pcs
2.28ctw Andalusite
3.99mm x 2.55mm
USD 102.60
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ID: 40992010 pcs
2.36ctw Moonstone
4.03mm x 2.09mm
USD 4.72
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ID: 42428910 pcs
2.61ctw Sapphire
3.92mm x 2.44mm
USD 93.96
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ID: 40991710 pcs
2.66ctw Moonstone
4.03mm x 2.39mm
USD 5.32
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ID: 4244299 pcs
2.43ctw Sapphire
3.88mm x 2.60mm
USD 87.48
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ID: 2948023 pcs
1.31ctw Chrysoberyl Cat's Eye
3.87mm x 2.90mm
USD 91.70
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ID: 3750105 pcs
1.42ctw Sapphire
3.88mm x 2.63mm
USD 52.75
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ID: 4316934 pcs
1.63ctw Spinel
4.14mm x 2.96mm
USD 73.25
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ID: 2066479 pcs
2.40ctw Andalusite
4.03mm x 2.56mm
USD 108.00
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ID: 3712927 pcs
1.89ctw Sapphire
3.90mm x 2.59mm
USD 76.26
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ID: 3908445 pcs
1.45ctw Andalusite
4.08mm x 2.85mm
USD 70.96
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ID: 3682795 pcs
1.82ctw Spessartite Garnet
4.11mm x 2.69mm
USD 50.14
Item in Stock
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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