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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (346): Round Shape 6.5 mm Gems Clear All
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ID: 4383621 pcs
1.42ct Zircon
6.26mm x 4.59mm
USD 28.40
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ID: 4205914 pcs
3.42ctw Tanzanite
6.29mm x 3.16mm
USD 410.40
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ID: 4344011 pcs
1.71ct Zircon
6.62mm x 4.95mm
USD 34.20
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ID: 4375412 pcs
3.25ctw Zircon
6.61mm x 4.74mm
USD 65.00
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ID: 3672164 pcs
2.85ctw Fire Opal
6.39mm x 4.16mm
USD 95.05
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ID: 4383162 pcs
2.93ctw Zircon
6.55mm x 4.39mm
USD 58.60
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ID: 3685874 pcs
5.65ctw Prehnite
6.34mm x 4.53mm
USD 27.80
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ID: 4384621 pcs
1.75ct Zircon
6.57mm x 5.03mm
USD 35.00
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ID: 4064722 pcs
2.36ctw Zircon
6.38mm x 3.61mm
USD 39.20
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ID: 4369421 pcs
1.43ct Zircon
6.38mm x 4.40mm
USD 28.60
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ID: 4323851 pcs
1.56ct Zircon
6.45mm x 4.52mm
USD 33.81
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ID: 3701171 pcs
1.63ct Zircon
6.71mm x 4.26mm
USD 35.29
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ID: 4375064 pcs
4.49ctw Agate
6.69mm x 4.02mm
USD 3.14
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ID: 4195491 pcs
1.60ct Tourmaline
6.52mm x 5.41mm
USD 80.00
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ID: 3774301 pcs
1.53ct Mali Garnet
6.32mm x 5.11mm
USD 81.67
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ID: 4375011 pcs
1.07ct Zircon
6.50mm x 4.60mm
USD 21.40
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ID: 3780971 pcs
2.36ct Zircon
6.55mm x 5.19mm
USD 63.39
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ID: 3785902 pcs
3.59ctw Zircon
6.66mm x 4.23mm
USD 89.46
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ID: 4056091 pcs
1.33ct Zircon
6.40mm x 3.91mm
USD 32.89
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ID: 3447521 pcs
1.20ct Hessonite Garnet
6.64mm x 4.09mm
USD 48.60
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ID: 4247361 pcs
1.17ct Tanzanite
6.60mm x 4.10mm
USD 135.11
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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