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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (19): Square Shape 8x8 mm Gems Clear All
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ID: 4172311 pcs
2.50ct Tourmaline
7.99mm x 7.95mm x 5.05mm
USD 479.95
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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: 3984841 pcs
2.35ct Citrine
7.93mm x 7.92mm x 4.98mm
USD 11.75
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ID: 4009211 pcs
2.25ct Rose Quartz
7.75mm x 7.72mm x 5.87mm
USD 15.75
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ID: 4009151 pcs
2.35ct Rose Quartz
8.14mm x 8.04mm x 5.57mm
USD 16.45
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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: 4362281 pcs
1.76ct Golden Beryl
7.94mm x 7.93mm x 4.06mm
USD 35.20
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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: 4009261 pcs
2.60ct Rose Quartz
7.72mm x 7.69mm x 6.45mm
USD 18.20
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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: 3420811 pcs
4.51ct Malachite
8.14mm x 7.93mm x 6.33mm
USD 12.95
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ID: 4329101 pcs
2.41ct Smoky Quartz
8.17mm x 8.00mm x 5.42mm
USD 4.10
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ID: 3984811 pcs
2.57ct Citrine
8.25mm x 8.16mm x 5.22mm
USD 12.85
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ID: 4007781 pcs
2.70ct Rose Quartz
8.13mm x 8.13mm x 6.49mm
USD 18.90
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ID: 3711884 pcs
14.95ctw Malachite
8.21mm x 7.82mm x 5.31mm
USD 15.85
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ID: 4008641 pcs
2.69ct Rose Quartz
8.32mm x 8.05mm x 6.24mm
USD 18.83
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ID: 4172291 pcs
2.31ct Tourmaline
7.97mm x 7.87mm x 5.06mm
USD 443.47
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ID: 4346811 pcs
2.41ct Citrine
8.13mm x 8.11mm x 4.99mm
USD 14.46
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ID: 4005271 pcs
3.04ct Hessonite Garnet
7.93mm x 7.92mm x 5.17mm
USD 60.80
Item in Stock
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