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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (266): Round Shape 6.5 mm Gems Clear All
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ID: 4203632 pcs
2.12ctw Tanzanite
6.25mm x 4.04mm
USD 254.40
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ID: 4344011 pcs
1.71ct Zircon
6.62mm x 4.95mm
USD 34.20
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ID: 4320451 pcs
0.62ct Opal
6.40mm x 3.61mm
USD 17.36
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ID: 4327262 pcs
2.80ctw Hessonite Garnet
6.55mm x 4.02mm
USD 35.84
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ID: 3806691 pcs
1.67ct Zircon
6.68mm x 4.29mm
USD 27.05
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ID: 4312721 pcs
0.58ct Opal
6.27mm x 3.22mm
USD 11.60
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ID: 4204091 pcs
1.03ct Tanzanite
6.64mm x 3.29mm
USD 123.60
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ID: 3803482 pcs
2.75ctw Zircon
6.64mm x 3.79mm
USD 44.55
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ID: 3686784 pcs
5.60ctw Prehnite
6.44mm x 4.12mm
USD 27.55
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ID: 4333422 pcs
2.94ctw Hessonite Garnet
6.57mm x 4.41mm
USD 37.63
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ID: 3785941 pcs
1.83ct Zircon
6.76mm x 4.41mm
USD 45.60
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ID: 3689251 pcs
1.58ct Prehnite
6.55mm x 4.97mm
USD 7.77
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ID: 3831291 pcs
0.64ct Fire Opal
6.42mm x 3.42mm
USD 20.49
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ID: 4010561 pcs
1.30ct Tourmaline
6.35mm x 4.74mm
USD 62.50
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ID: 4203152 pcs
2.10ctw Tanzanite
6.50mm x 3.48mm
USD 252.00
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ID: 3857882 pcs
3.22ctw Zircon
6.47mm x 4.76mm
USD 79.34
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ID: 4054682 pcs
3.50ctw Zircon
6.50mm x 4.85mm
USD 86.56
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ID: 4219041 pcs
1.03ct Sapphire
6.35mm x 3.20mm
USD 51.50
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ID: 3789171 pcs
1.78ct Zircon
6.34mm x 4.47mm
USD 44.36
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ID: 4343971 pcs
1.60ct Zircon
6.67mm x 4.63mm
USD 32.00
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ID: 3700411 pcs
1.41ct Zircon
6.67mm x 4.02mm
USD 30.53
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Round Shape 6.5 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 6.5 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