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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (204): Round Shape 3 mm Gems Clear All
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ID: 40966610 pcs
1.32ctw Sapphire
2.95mm x 2.14mm
USD 46.20
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ID: 42195720 pcs
2.25ctw Sapphire
2.96mm x 2.16mm
USD 67.50
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ID: 34709315 pcs
2.60ctw Sapphire
3.06mm x 1.81mm
USD 130.00
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ID: 40948010 pcs
1.31ctw Sapphire
2.97mm x 2.09mm
USD 45.85
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ID: 42116520 pcs
2.35ctw Sapphire
2.88mm x 1.85mm
USD 82.25
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ID: 40197010 pcs
1.27ctw Ruby
2.88mm x 2.04mm
USD 176.40
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ID: 40915310 pcs
1.23ctw Sapphire
2.91mm x 1.96mm
USD 55.35
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ID: 40211210 pcs
1.54ctw Ruby
3.08mm x 2.09mm
USD 213.91
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ID: 34472420 pcs
3.07ctw Sapphire
3.03mm x 1.51mm
USD 153.78
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ID: 43043810 pcs
1.23ctw Sapphire
3.05mm x 1.67mm
USD 78.67
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ID: 40217710 pcs
1.47ctw Ruby
3.07mm x 2.00mm
USD 204.18
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ID: 38563720 pcs
2.56ctw Demantoid Garnet
3.02mm x 2.06mm
USD 178.43
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ID: 4309006 pcs
0.87ctw Sapphire
3.12mm x 1.86mm
USD 55.65
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ID: 40896410 pcs
1.05ctw Sapphire
2.89mm x 1.75mm
USD 47.25
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ID: 42116820 pcs
2.30ctw Sapphire
2.94mm x 2.01mm
USD 80.50
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ID: 38639210 pcs
1.33ctw Demantoid Garnet
3.02mm x 2.14mm
USD 92.82
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ID: 38563920 pcs
2.43ctw Demantoid Garnet
3.09mm x 2.01mm
USD 169.37
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ID: 43043910 pcs
1.15ctw Sapphire
2.91mm x 2.08mm
USD 73.55
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ID: 38664310 pcs
1.38ctw Demantoid Garnet
3.09mm x 2.01mm
USD 96.31
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ID: 42196520 pcs
2.24ctw Sapphire
2.88mm x 2.12mm
USD 67.20
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ID: 34472520 pcs
3.19ctw Sapphire
3.11mm x 1.64mm
USD 159.79
Item in Stock
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Round Shape 3 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 3 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