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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (193): Octagon Shape 7x5 mm Gems Clear All
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ID: 3937292 pcs
2.44ct Hessonite Garnet
6.88 x 5.06 x 3.43mm
USD 34.16
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ID: 3789121 pcs
1.01ct Tourmaline
7.12 x 5.03 x 3.45mm
USD 45.96
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ID: 4299951 pcs
1.63ct Zircon
7.06 x 4.99 x 3.36mm
USD 24.45
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ID: 2883664 pcs
5.43ct Kyanite
7.17 x 5.16 x 3.54mm
USD 128.96
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ID: 4052364 pcs
4.34ct Topaz
6.97 x 4.93 x 3.47mm
USD 30.16
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ID: 3939802 pcs
1.90ct Hessonite Garnet
6.93 x 4.92 x 2.80mm
USD 26.60
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ID: 3728592 pcs
2.72ct Rhodolite Garnet
7.07 x 5.03 x 3.43mm
USD 72.08
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ID: 3937282 pcs
2.46ct Hessonite Garnet
6.91 x 4.93 x 3.75mm
USD 34.44
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ID: 4051124 pcs
4.77ct Topaz
7.08 x 5.08 x 3.53mm
USD 33.15
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ID: 4314891 pcs
1.01ct Hessonite Garnet
6.93 x 5.17 x 2.94mm
USD 18.18
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ID: 3235561 pcs
0.86ct Emerald
6.99 x 5.04 x 3.35mm
USD 227.04
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ID: 4298701 pcs
1.58ct Zircon
7.09 x 4.99 x 3.33mm
USD 23.70
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ID: 3970181 pcs
1.03ct Color-Change Diaspore
6.75 x 4.87 x 3.40mm
USD 49.19
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ID: 3938512 pcs
2.57ct Hessonite Garnet
6.93 x 5.09 x 3.71mm
USD 35.98
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ID: 3919344 pcs
5.05ct Hessonite Garnet
6.80 x 4.95 x 3.83mm
USD 101.00
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ID: 2883934 pcs
4.94ct Kyanite
7.21 x 5.17 x 3.36mm
USD 117.33
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ID: 3235591 pcs
0.94ct Emerald
6.90 x 4.89 x 3.40mm
USD 248.16
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ID: 4123971 pcs
0.74ct Iolite
6.98 x 4.84 x 3.05mm
USD 14.80
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ID: 2751585 pcs
5.57ct Citrine
7.09 x 5.08 x 4.03mm
USD 29.24
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ID: 3921444 pcs
4.86ct Hessonite Garnet
6.92 x 5.06 x 3.50mm
USD 97.20
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ID: 4305001 pcs
1.51ct Zircon
7.16 x 4.84 x 3.26mm
USD 37.75
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Octagon Shape 7x5 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 Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 7 x 5 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 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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