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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (326): Round Shape 6.5 mm Gems Clear All
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ID: 4055811 pcs
thumb image of 1.6ct Diamond-Cut White Zircon (ID: 405581)
1.61ct Zircon
6.61 x 4.52mm
USD 39.82
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ID: 4345422 pcs
thumb image of 3.2ct Diamond-Cut Orange Zircon (ID: 434542)
3.16ct Zircon
6.59 x 4.37mm
USD 63.20
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ID: 4056291 pcs
thumb image of 1.4ct Diamond-Cut White Zircon (ID: 405629)
1.35ct Zircon
6.40 x 4.11mm
USD 33.39
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ID: 4322801 pcs
thumb image of 0.7ct Round Cabochon Multicolor Opal (ID: 432280)
0.69ct Opal
6.54 x 3.83mm
USD 19.32
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ID: 4203212 pcs
thumb image of 1.9ct Round Facet Violet Blue Tanzanite (ID: 420321)
1.93ct Tanzanite
6.50 x 3.39mm
USD 231.60
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ID: 4376441 pcs
thumb image of 1.5ct Diamond-Cut Golden Zircon (ID: 437644)
1.48ct Zircon
6.47 x 4.47mm
USD 29.60
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ID: 4373771 pcs
thumb image of 1.3ct Diamond-Cut Golden Zircon (ID: 437377)
1.33ct Zircon
6.31 x 4.17mm
USD 26.60
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ID: 3834171 pcs
thumb image of 0.8ct Round Facet Reddish Orange Fire Opal (ID: 383417)
0.77ct Fire Opal
6.51 x 4.44mm
USD 24.61
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ID: 3903441 pcs
thumb image of 1.3ct Round Facet Green/Pink Color-Change Diaspore (ID: 390344)
1.28ct Color-Change Diaspore
6.60 x 4.27mm
USD 62.73
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ID: 3780981 pcs
thumb image of 2ct Round Facet White Zircon (ID: 378098)
1.96ct Zircon
6.74 x 4.56mm
USD 52.65
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ID: 4388131 pcs
thumb image of 1.5ct Diamond-Cut Golden Orange Zircon (ID: 438813)
1.51ct Zircon
6.42 x 4.80mm
USD 30.20
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ID: 4315991 pcs
thumb image of 0.7ct Round Cabochon Multicolor Opal (ID: 431599)
0.69ct Opal
6.27 x 3.54mm
USD 13.80
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ID: 3806204 pcs
thumb image of 4.9ct Diamond-Cut White Zircon (ID: 380620)
4.85ct Zircon
6.26 x 3.72mm
USD 78.57
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ID: 3685924 pcs
thumb image of 5.4ct Round Cabochon Green Prehnite (ID: 368592)
5.38ct Prehnite
6.61 x 4.24mm
USD 26.47
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ID: 4195531 pcs
thumb image of 1.4ct Round Facet Rose Pink Tourmaline (ID: 419553)
1.41ct Tourmaline
6.62 x 4.81mm
USD 70.50
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ID: 4376451 pcs
thumb image of 1.8ct Diamond-Cut Orange Zircon (ID: 437645)
1.81ct Zircon
6.67 x 5.25mm
USD 36.20
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ID: 3689251 pcs
thumb image of 1.6ct Round Cabochon Green Prehnite (ID: 368925)
1.58ct Prehnite
6.55 x 4.97mm
USD 7.77
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ID: 4369441 pcs
thumb image of 1.5ct Diamond-Cut Golden Orange Zircon (ID: 436944)
1.46ct Zircon
6.48 x 4.41mm
USD 29.20
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ID: 3857882 pcs
thumb image of 3.2ct Diamond-Cut White Zircon (ID: 385788)
3.22ct Zircon
6.47 x 4.76mm
USD 79.34
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ID: 3686893 pcs
thumb image of 4.6ct Round Cabochon Green Prehnite (ID: 368689)
4.55ct Prehnite
6.72 x 4.14mm
USD 22.39
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ID: 4369421 pcs
thumb image of 1.4ct Diamond-Cut Golden Orange Zircon (ID: 436942)
1.43ct Zircon
6.38 x 4.40mm
USD 28.60
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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