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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (253): Round Shape 6.5 mm Gems Clear All
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ID: 4333331 pcs
1.30ct Hessonite Garnet
6.57mm x 3.66mm
USD 16.64
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ID: 4054712 pcs
3.30ctw Zircon
6.56mm x 4.68mm
USD 81.61
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ID: 4331791 pcs
1.24ct Hessonite Garnet
6.29mm x 3.86mm
USD 15.87
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ID: 4312721 pcs
0.58ct Opal
6.27mm x 3.22mm
USD 11.60
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ID: 3903441 pcs
1.28ct Color-Change Diaspore
6.60mm x 4.27mm
USD 62.73
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ID: 3700301 pcs
1.53ct Zircon
6.66mm x 4.20mm
USD 33.12
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ID: 2742091 pcs
0.99ct Tourmaline
6.28mm x 4.07mm
USD 25.05
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ID: 3438181 pcs
1.22ct Hessonite Garnet
6.60mm x 4.10mm
USD 51.24
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ID: 4214011 pcs
1.20ct Tourmaline
6.31mm x 4.69mm
USD 60.00
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ID: 4329541 pcs
1.37ct Hessonite Garnet
6.37mm x 4.18mm
USD 17.54
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ID: 3780981 pcs
1.96ct Zircon
6.74mm x 4.56mm
USD 52.65
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ID: 3806204 pcs
4.85ctw Zircon
6.26mm x 3.72mm
USD 78.57
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ID: 3861201 pcs
1.76ct Zircon
6.61mm x 5.14mm
USD 43.37
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ID: 4320451 pcs
0.62ct Opal
6.40mm x 3.61mm
USD 17.36
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ID: 4331181 pcs
1.71ct Hessonite Garnet
6.66mm x 4.69mm
USD 21.89
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ID: 3779841 pcs
2.28ct Zircon
6.67mm x 5.07mm
USD 61.24
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ID: 3685924 pcs
5.38ctw Prehnite
6.61mm x 4.24mm
USD 26.47
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ID: 4331161 pcs
1.62ct Hessonite Garnet
6.72mm x 4.35mm
USD 20.74
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ID: 3834171 pcs
0.77ct Fire Opal
6.51mm x 4.44mm
USD 24.61
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ID: 4343341 pcs
1.63ct Zircon
6.58mm x 4.74mm
USD 32.60
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ID: 3820701 pcs
1.24ct Rhodolite Garnet
6.40mm x 3.77mm
USD 52.87
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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