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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (619): Round Shape 4 mm Gems Clear All
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ID: 2948265 pcs
2.23ctw Chrysoberyl Cat's Eye
3.89mm x 2.62mm
USD 156.10
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ID: 4294481 pcs
0.20ct Emerald
3.90mm x 2.26mm
USD 78.00
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ID: 4103828 pcs
1.96ctw Moonstone
4.06mm x 2.08mm
USD 3.92
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ID: 4151304 pcs
1.37ctw Rhodolite Garnet
4.09mm x 2.70mm
USD 27.40
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ID: 3751484 pcs
1.34ctw Sapphire
4.10mm x 2.75mm
USD 49.78
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ID: 2214319 pcs
2.32ctw Andalusite
4.14mm x 2.68mm
USD 104.40
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ID: 3104705 pcs
2.09ctw Zircon
4.11mm x 2.86mm
USD 30.72
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ID: 3749614 pcs
1.05ctw Sapphire
3.88mm x 2.57mm
USD 39.01
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ID: 3446545 pcs
1.94ctw Sapphire
3.90mm x 2.05mm
USD 97.00
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ID: 3797536 pcs
2.48ctw Spessartite Garnet
4.14mm x 2.67mm
USD 106.44
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ID: 3833658 pcs
3.51ctw Almandine Garnet
4.10mm x 2.35mm
USD 11.23
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ID: 4101568 pcs
2.14ctw Moonstone
3.98mm x 2.46mm
USD 4.28
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ID: 41030910 pcs
2.81ctw Moonstone
4.07mm x 2.42mm
USD 5.62
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ID: 4248992 pcs
0.53ctw Sapphire
3.84mm x 2.49mm
USD 21.20
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ID: 3735394 pcs
1.47ctw Sapphire
4.07mm x 2.72mm
USD 62.33
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ID: 4252521 pcs
0.30ct Sapphire
4.12mm x 2.56mm
USD 30.00
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ID: 4152156 pcs
2.01ctw Rhodolite Garnet
4.07mm x 2.64mm
USD 40.20
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ID: 3221075 pcs
1.63ctw Demantoid Garnet
3.98mm x 2.57mm
USD 162.59
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ID: 4019285 pcs
2.40ctw Spessartite Garnet
4.15mm x 2.87mm
USD 74.40
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ID: 4151194 pcs
1.60ctw Rhodolite Garnet
4.14mm x 3.08mm
USD 32.00
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ID: 2798959 pcs
2.30ctw Andalusite
4.12mm x 2.51mm
USD 115.00
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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