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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (22): Square Shape 8x8 mm Gems Clear All
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ID: 4346811 pcs
thumb image of 2.4ct Square Buff-Top Yellow Golden Citrine (ID: 434681)
2.41 ct Citrine
8.1 x 8.1 mm
$ 14.46
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ID: 4376151 pcs
thumb image of 2.9ct Princess-Cut Sky Blue Topaz (ID: 437615)
2.93 ct Topaz
8.1 x 8 mm
$ 14.65
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ID: 4005271 pcs
thumb image of 3ct Square Facet Cinnamon Orange Hessonite Garnet (ID: 400527)
3.04 ct Hessonite Garnet
7.9 x 7.9 mm
$ 60.80
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ID: 4369271 pcs
thumb image of 3.2ct Princess-Cut Sky Blue Topaz (ID: 436927)
3.21 ct Topaz
8.2 x 8.1 mm
$ 16.05
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ID: 4362331 pcs
thumb image of 2.1ct Square Facet Yellow Golden Golden Beryl (ID: 436233)
2.11 ct Golden Beryl
8 x 8 mm
$ 42.20
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ID: 4369182 pcs
thumb image of 6.3ct Princess-Cut Sky Blue Topaz (ID: 436918)
6.32 ct Topaz
7.9 x 7.9 mm
$ 31.60
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ID: 4390091 pcs
thumb image of 3ct Square Facet Golden Green Apatite (ID: 439009)
2.95 ct Apatite
8.1 x 8 mm
$ 138.65
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ID: 4387221 pcs
thumb image of 2.7ct Square Facet Violet Amethyst (ID: 438722)
2.65 ct Amethyst
8.1 x 8.1 mm
$ 13.25
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ID: 4369252 pcs
thumb image of 6.1ct Princess-Cut Sky Blue Topaz (ID: 436925)
6.10 ct Topaz
8.1 x 8.1 mm
$ 30.50
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ID: 3984841 pcs
thumb image of 2.4ct Square Facet Yellow Golden Citrine (ID: 398484)
2.35 ct Citrine
7.9 x 7.9 mm
$ 11.75
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ID: 4009241 pcs
thumb image of 2.4ct Princess-Cut Pink Rose Quartz (ID: 400924)
2.40 ct Rose Quartz
8.1 x 8 mm
$ 16.80
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ID: 4388201 pcs
thumb image of 2.4ct Square Facet Violet Amethyst (ID: 438820)
2.37 ct Amethyst
8.1 x 8 mm
$ 11.85
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ID: 4172291 pcs
thumb image of 2.3ct Princess-Cut Pink Rose Tourmaline (ID: 417229)
2.31 ct Tourmaline
8 x 7.9 mm
$ 231.00
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ID: 4172311 pcs
thumb image of 2.5ct Square Facet Pink Rose Tourmaline (ID: 417231)
2.50 ct Tourmaline
8 x 8 mm
$ 300.00
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ID: 4362281 pcs
thumb image of 1.8ct Square Facet Yellow Golden Golden Beryl (ID: 436228)
1.76 ct Golden Beryl
7.9 x 7.9 mm
$ 35.20
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ID: 3420811 pcs
thumb image of 4.5ct Square Cabochon Multicolor Green Malachite (ID: 342081)
4.51 ct Malachite
8.1 x 7.9 mm
$ 12.95
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ID: 4384521 pcs
thumb image of 2.7ct Square Facet Violet Amethyst (ID: 438452)
2.70 ct Amethyst
8.1 x 8.1 mm
$ 13.50
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ID: 4369222 pcs
thumb image of 6.1ct Princess-Cut Sky Blue Topaz (ID: 436922)
6.06 ct Topaz
8 x 8 mm
$ 30.30
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ID: 4362291 pcs
thumb image of 1.9ct Square Facet Yellow Golden Golden Beryl (ID: 436229)
1.89 ct Golden Beryl
7.9 x 7.8 mm
$ 37.80
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ID: 4007781 pcs
thumb image of 2.7ct Princess-Cut Pink Rose Quartz (ID: 400778)
2.70 ct Rose Quartz
8.1 x 8.1 mm
$ 18.90
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ID: 4369202 pcs
thumb image of 6.4ct Princess-Cut Sky Blue Topaz (ID: 436920)
6.41 ct Topaz
7.9 x 7.9 mm
$ 32.05
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Square Shape 8x8 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 Square shapes, facet cut and cabochon gems available now in 8 mm x 8 mm 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 meant nor 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