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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (44): Square Shape 8x8 mm Gems Clear All
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ID: 4388201 pcs
2.37ct Amethyst
8.05mm x 7.96mm x 5.10mm
USD 11.85
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ID: 4390091 pcs
2.95ct Apatite
8.11mm x 7.99mm x 5.86mm
USD 138.65
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ID: 4362291 pcs
1.89ct Golden Beryl
7.90mm x 7.80mm x 4.64mm
USD 37.80
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ID: 4373601 pcs
2.94ct Topaz
7.95mm x 7.77mm x 5.22mm
USD 14.70
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ID: 4387501 pcs
2.59ct Amethyst
8.15mm x 8.08mm x 5.69mm
USD 12.95
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ID: 4005271 pcs
3.04ct Hessonite Garnet
7.93mm x 7.92mm x 5.17mm
USD 60.80
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ID: 4369271 pcs
3.21ct Topaz
8.19mm x 8.14mm x 5.37mm
USD 16.05
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ID: 4369261 pcs
3.24ct Topaz
8.21mm x 8.20mm x 5.23mm
USD 16.20
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ID: 3984841 pcs
2.35ct Citrine
7.93mm x 7.92mm x 4.98mm
USD 11.75
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ID: 4376151 pcs
2.93ct Topaz
8.12mm x 7.96mm x 4.94mm
USD 14.65
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ID: 4384001 pcs
2.51ct Amethyst
8.02mm x 7.98mm x 5.35mm
USD 12.55
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ID: 4376161 pcs
3.37ct Topaz
8.06mm x 8.03mm x 5.57mm
USD 16.85
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ID: 4369212 pcs
6.28ctw Topaz
8.23mm x 8.12mm x 5.33mm
USD 31.40
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ID: 4369252 pcs
6.10ctw Topaz
8.13mm x 8.07mm x 5.01mm
USD 30.50
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ID: 4369182 pcs
6.32ctw Topaz
7.90mm x 7.88mm x 5.28mm
USD 31.60
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ID: 4369232 pcs
6.48ctw Topaz
8.21mm x 8.00mm x 5.59mm
USD 32.40
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ID: 4369291 pcs
3.11ct Topaz
8.15mm x 8.02mm x 5.25mm
USD 15.55
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ID: 4329111 pcs
2.96ct Smoky Quartz
8.28mm x 8.19mm x 6.45mm
USD 5.03
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ID: 4362331 pcs
2.11ct Golden Beryl
7.98mm x 7.95mm x 4.57mm
USD 42.20
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ID: 4009241 pcs
2.40ct Rose Quartz
8.09mm x 7.97mm x 6.15mm
USD 16.80
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ID: 4369222 pcs
6.06ctw Topaz
8.01mm x 8.00mm x 5.16mm
USD 30.30
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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