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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (39): Square Shape 8x8 mm Gems Clear All
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ID: 4373591 pcs
2.93ct Topaz
8.09 x 8.06 x 5.11mm
USD 14.65
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ID: 4376151 pcs
2.93ct Topaz
8.12 x 7.96 x 4.94mm
USD 14.65
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ID: 4369202 pcs
6.41ctw Topaz
7.89 x 7.87 x 5.65mm
USD 32.05
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ID: 3984811 pcs
2.57ct Citrine
8.25 x 8.16 x 5.22mm
USD 12.85
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ID: 4369271 pcs
3.21ct Topaz
8.19 x 8.14 x 5.37mm
USD 16.05
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ID: 4346811 pcs
2.41ct Citrine
8.13 x 8.11 x 4.99mm
USD 14.46
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ID: 4373601 pcs
2.94ct Topaz
7.95 x 7.77 x 5.22mm
USD 14.70
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ID: 4007781 pcs
2.70ct Rose Quartz
8.13 x 8.13 x 6.49mm
USD 18.90
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ID: 4009241 pcs
2.40ct Rose Quartz
8.09 x 7.97 x 6.15mm
USD 16.80
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ID: 4387241 pcs
2.65ct Amethyst
8.04 x 8.02 x 5.95mm
USD 13.25
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ID: 4369261 pcs
3.24ct Topaz
8.21 x 8.20 x 5.23mm
USD 16.20
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ID: 4362281 pcs
1.76ct Golden Beryl
7.94 x 7.93 x 4.06mm
USD 35.20
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ID: 4376161 pcs
3.37ct Topaz
8.06 x 8.03 x 5.57mm
USD 16.85
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ID: 3984841 pcs
2.35ct Citrine
7.93 x 7.92 x 4.98mm
USD 11.75
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ID: 4369291 pcs
3.11ct Topaz
8.15 x 8.02 x 5.25mm
USD 15.55
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ID: 4369182 pcs
6.32ctw Topaz
7.90 x 7.88 x 5.28mm
USD 31.60
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ID: 4369242 pcs
6.72ctw Topaz
8.21 x 8.19 x 5.64mm
USD 33.60
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ID: 4387521 pcs
2.56ct Amethyst
7.91 x 7.83 x 5.93mm
USD 12.80
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ID: 4362331 pcs
2.11ct Golden Beryl
7.98 x 7.95 x 4.57mm
USD 42.20
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ID: 4388201 pcs
2.37ct Amethyst
8.05 x 7.96 x 5.10mm
USD 11.85
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ID: 4383241 pcs
2.77ct Amethyst
8.11 x 8.11 x 5.83mm
USD 13.85
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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