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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: 2276112 pcs
thumb image of 4.4ct Round Cabochon Orange Spessartite Garnet (ID: 227611)
4.44 ct Spessartite Garnet
6.7 mm
$ 35.52
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ID: 4203212 pcs
thumb image of 1.9ct Round Facet Violet Blue Tanzanite (ID: 420321)
1.93 ct Tanzanite
6.5 mm
$ 231.60
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ID: 4588851 pcs
thumb image of 0.9ct Round Cabochon Green Prehnite (ID: 458885)
0.93 ct Prehnite
6.6 mm
$ 1.39
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ID: 3698661 pcs
thumb image of 1.5ct Diamond-Cut White Zircon (ID: 369866)
1.49 ct Zircon
6.6 mm
$ 32.26
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ID: 4056052 pcs
thumb image of 3.1ct Diamond-Cut White Zircon (ID: 405605)
3.07 ct Zircon
6.3 mm
$ 75.92
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ID: 4588881 pcs
thumb image of 1.1ct Round Cabochon Green Prehnite (ID: 458888)
1.12 ct Prehnite
6.6 mm
$ 1.67
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ID: 3903441 pcs
thumb image of 1.3ct Round Facet Green/Pink Color-Change Diaspore (ID: 390344)
1.28 ct Color-Change Diaspore
6.6 mm
$ 62.73
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ID: 4330291 pcs
thumb image of 1.2ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 433029)
1.24 ct Hessonite Garnet
6.5 mm
$ 15.87
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ID: 4203132 pcs
thumb image of 1.7ct Round Facet Violet Blue Tanzanite (ID: 420313)
1.74 ct Tanzanite
6.4 mm
$ 208.80
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ID: 4329621 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432962)
1.28 ct Hessonite Garnet
6.4 mm
$ 16.38
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ID: 3259314 pcs
thumb image of 4.8ct Round Facet Multicolor Malaya Garnet (ID: 325931)
4.82 ct Malaya Garnet
6.4 mm
$ 364.39
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ID: 4320471 pcs
thumb image of 0.6ct Round Cabochon Multicolor Opal (ID: 432047)
0.63 ct Opal
6.4 mm
$ 17.64
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ID: 4329611 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432961)
1.30 ct Hessonite Garnet
6.5 mm
$ 16.64
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ID: 4203492 pcs
thumb image of 2.1ct Round Facet Violet Blue Tanzanite (ID: 420349)
2.08 ct Tanzanite
6.5 mm
$ 249.60
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ID: 4331831 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 433183)
1.30 ct Hessonite Garnet
6.3 mm
$ 16.64
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ID: 4588211 pcs
thumb image of 1ct Diamond-Cut Champagne Diamond (ID: 458821)
1.01 ct Diamond
6.3 mm
$ 2153.23
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ID: 4333331 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 433333)
1.30 ct Hessonite Garnet
6.6 mm
$ 16.64
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ID: 4325302 pcs
thumb image of 2.5ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432530)
2.48 ct Hessonite Garnet
6.6 mm
$ 31.74
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ID: 4054692 pcs
thumb image of 3.1ct Diamond-Cut White Zircon (ID: 405469)
3.10 ct Zircon
6.5 mm
$ 76.66
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ID: 4331811 pcs
thumb image of 1.3ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 433181)
1.32 ct Hessonite Garnet
6.4 mm
$ 16.90
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ID: 4325212 pcs
thumb image of 2.6ct Round Facet Cinnamon Orange Hessonite Garnet (ID: 432521)
2.55 ct Hessonite Garnet
6.4 mm
$ 32.64
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Round Shape 6.5 mm Gems
Some people buy 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 even slightly higher. 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