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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (337): Round Shape 6.5 mm Gems Clear All
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ID: 4347041 pcs
thumb image of 1.6ct Diamond-Cut Golden Orange Zircon (ID: 434704)
1.62ct Zircon
6.54 x 4.73mm
USD 32.40
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ID: 4205914 pcs
thumb image of 3.4ct Round Facet Violet Blue Tanzanite (ID: 420591)
3.42ct Tanzanite
6.29 x 3.16mm
USD 410.40
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ID: 4370701 pcs
thumb image of 1.5ct Diamond-Cut Golden Zircon (ID: 437070)
1.52ct Zircon
6.56 x 4.59mm
USD 30.40
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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: 4343361 pcs
thumb image of 1.6ct Diamond-Cut Golden Orange Zircon (ID: 434336)
1.59ct Zircon
6.57 x 4.60mm
USD 31.80
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ID: 4375412 pcs
thumb image of 3.3ct Diamond-Cut Orange Zircon (ID: 437541)
3.25ct Zircon
6.61 x 4.74mm
USD 65.00
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ID: 4331881 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 433188)
1.34ct Hessonite Garnet
6.28 x 4.15mm
USD 17.15
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ID: 4384581 pcs
thumb image of 1.5ct Diamond-Cut Golden Orange Zircon (ID: 438458)
1.46ct Zircon
6.40 x 4.61mm
USD 29.20
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ID: 3802772 pcs
thumb image of 2.9ct Diamond-Cut White Zircon (ID: 380277)
2.89ct Zircon
6.32 x 4.07mm
USD 46.82
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ID: 4052531 pcs
thumb image of 1.5ct Diamond-Cut White Zircon (ID: 405253)
1.49ct Zircon
6.38 x 4.19mm
USD 36.62
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ID: 4327302 pcs
thumb image of 2.6ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432730)
2.63ct Hessonite Garnet
6.66 x 3.72mm
USD 33.66
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ID: 3892391 pcs
thumb image of 1ct Diamond-Cut Yellowish Green Kornerupine (ID: 389239)
0.99ct Kornerupine
6.33 x 4.05mm
USD 86.09
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ID: 4322861 pcs
thumb image of 0.7ct Round Cabochon Multicolor Opal (ID: 432286)
0.70ct Opal
6.76 x 3.67mm
USD 19.60
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ID: 4372501 pcs
thumb image of 1.7ct Diamond-Cut Orange Zircon (ID: 437250)
1.66ct Zircon
6.64 x 4.75mm
USD 33.20
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ID: 3926031 pcs
thumb image of 1ct Round Facet Green Apatite (ID: 392603)
1.01ct Apatite
6.59 x 3.48mm
USD 37.73
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ID: 3802762 pcs
thumb image of 3.1ct Diamond-Cut White Zircon (ID: 380276)
3.13ct Zircon
6.61 x 4.26mm
USD 50.71
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ID: 3831741 pcs
thumb image of 0.8ct Round Facet Reddish Orange Fire Opal (ID: 383174)
0.76ct Fire Opal
6.56 x 4.24mm
USD 24.34
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ID: 3893331 pcs
thumb image of 1.2ct Diamond-Cut Yellowish Green Kornerupine (ID: 389333)
1.22ct Kornerupine
6.57 x 4.96mm
USD 106.09
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ID: 4389012 pcs
thumb image of 3.1ct Diamond-Cut Orange Zircon (ID: 438901)
3.08ct Zircon
6.65 x 4.44mm
USD 61.60
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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: 4195541 pcs
thumb image of 1.4ct Round Facet Rose Pink Tourmaline (ID: 419554)
1.42ct Tourmaline
6.40 x 5.20mm
USD 71.00
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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