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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: 4205251 pcs
1.00ct Tanzanite
6.44mm x 3.91mm
USD 120.00
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ID: 3802702 pcs
2.61ctw Zircon
6.25mm x 3.88mm
USD 42.28
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ID: 3810841 pcs
1.45ct Rhodolite Garnet
6.60mm x 4.12mm
USD 70.40
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ID: 4214011 pcs
1.20ct Tourmaline
6.31mm x 4.69mm
USD 60.00
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ID: 3785951 pcs
1.82ct Zircon
6.71mm x 4.21mm
USD 45.35
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ID: 3530621 pcs
1.41ct Sphene
6.70mm x 4.44mm
USD 62.67
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ID: 3259284 pcs
4.74ctw Malaya Garnet
6.24mm x 3.98mm
USD 358.34
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ID: 3891121 pcs
1.30ct Color-Change Diaspore
6.35mm x 4.63mm
USD 63.23
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ID: 4203542 pcs
2.39ctw Tanzanite
6.40mm x 4.20mm
USD 286.80
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ID: 3682282 pcs
3.09ctw Prehnite
6.70mm x 4.89mm
USD 15.33
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ID: 4056291 pcs
1.35ct Zircon
6.40mm x 4.11mm
USD 33.39
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ID: 3804342 pcs
2.78ctw Zircon
6.27mm x 4.16mm
USD 45.04
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ID: 4329561 pcs
1.52ct Hessonite Garnet
6.48mm x 4.40mm
USD 19.46
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ID: 4203642 pcs
2.35ctw Tanzanite
6.52mm x 4.18mm
USD 282.00
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ID: 4203212 pcs
1.93ctw Tanzanite
6.50mm x 3.39mm
USD 231.60
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ID: 4203222 pcs
1.82ctw Tanzanite
6.51mm x 3.30mm
USD 218.40
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ID: 4329621 pcs
1.28ct Hessonite Garnet
6.41mm x 4.01mm
USD 16.38
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ID: 4064722 pcs
2.36ctw Zircon
6.38mm x 3.61mm
USD 39.20
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ID: 3259304 pcs
4.90ctw Malaya Garnet
6.54mm x 3.97mm
USD 370.44
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ID: 3774301 pcs
1.53ct Mali Garnet
6.32mm x 5.11mm
USD 81.67
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ID: 3804352 pcs
2.94ctw Zircon
6.43mm x 4.17mm
USD 47.63
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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