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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: 3820911 pcs
1.01ct Diamond
6.32mm x 3.88mm
USD 2153.23
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ID: 4205914 pcs
3.42ctw Tanzanite
6.29mm x 3.16mm
USD 410.40
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ID: 4333331 pcs
1.30ct Hessonite Garnet
6.57mm x 3.66mm
USD 16.64
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ID: 4054652 pcs
2.99ctw Zircon
6.38mm x 4.53mm
USD 73.94
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ID: 4056052 pcs
3.07ctw Zircon
6.28mm x 4.71mm
USD 75.92
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ID: 2276182 pcs
3.25ctw Spessartite Garnet
6.37mm x 3.28mm
USD 44.80
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ID: 3682542 pcs
2.67ctw Prehnite
6.57mm x 4.10mm
USD 13.24
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ID: 4204131 pcs
0.90ct Tanzanite
6.33mm x 3.91mm
USD 108.00
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ID: 3804332 pcs
3.09ctw Zircon
6.39mm x 4.35mm
USD 50.06
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ID: 3831751 pcs
0.63ct Fire Opal
6.40mm x 3.71mm
USD 20.17
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ID: 4345431 pcs
1.77ct Zircon
6.70mm x 4.86mm
USD 35.40
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ID: 4204721 pcs
0.95ct Tanzanite
6.29mm x 3.42mm
USD 114.00
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ID: 3438181 pcs
1.22ct Hessonite Garnet
6.60mm x 4.10mm
USD 51.24
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ID: 3558111 pcs
1.66ct Zircon
6.67mm x 4.58mm
USD 41.50
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ID: 4331821 pcs
1.45ct Hessonite Garnet
6.40mm x 4.60mm
USD 18.56
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ID: 4330291 pcs
1.24ct Hessonite Garnet
6.46mm x 3.69mm
USD 15.87
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ID: 4320421 pcs
0.63ct Opal
6.30mm x 3.63mm
USD 17.64
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ID: 4203182 pcs
2.25ctw Tanzanite
6.60mm x 3.63mm
USD 270.00
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ID: 4331071 pcs
1.83ct Hessonite Garnet
6.76mm x 5.11mm
USD 23.42
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ID: 3685935 pcs
6.30ctw Prehnite
6.32mm x 4.13mm
USD 31.00
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ID: 3803512 pcs
2.49ctw Zircon
6.44mm x 3.54mm
USD 40.34
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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