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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (197): Octagon Shape 7x5 mm Gems Clear All
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ID: 4305011 pcs
1.23ct Zircon
7.17 x 4.91 x 2.60mm
USD 30.75
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ID: 4052384 pcs
4.92ctw Topaz
7.25 x 5.17 x 3.52mm
USD 34.19
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ID: 37170212 pcs
13.39ctw Almandine Garnet
7.23 x 5.00 x 2.77mm
USD 66.95
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ID: 37154210 pcs
10.59ctw Almandine Garnet
6.96 x 4.93 x 2.50mm
USD 52.95
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ID: 3963381 pcs
0.86ct Color-Change Diaspore
6.95 x 4.87 x 2.62mm
USD 41.07
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ID: 4252571 pcs
0.99ct Aquamarine
7.13 x 5.02 x 3.47mm
USD 39.60
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ID: 4202483 pcs
2.90ctw Emerald
6.94 x 4.90 x 3.65mm
USD 749.30
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ID: 4297222 pcs
2.75ctw Zircon
7.17 x 5.02 x 2.80mm
USD 41.25
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ID: 3716838 pcs
10.90ctw Almandine Garnet
7.08 x 5.05 x 3.47mm
USD 54.50
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ID: 3544364 pcs
4.12ctw Almandine Garnet
7.00 x 5.06 x 2.68mm
USD 20.60
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ID: 3544394 pcs
3.80ctw Almandine Garnet
6.93 x 4.94 x 2.72mm
USD 19.00
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ID: 4297911 pcs
1.61ct Zircon
7.23 x 5.04 x 3.22mm
USD 24.15
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ID: 4297951 pcs
1.54ct Zircon
7.03 x 4.95 x 3.06mm
USD 23.10
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ID: 37153610 pcs
11.34ctw Almandine Garnet
6.83 x 4.89 x 3.34mm
USD 56.70
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ID: 4297182 pcs
3.06ctw Zircon
7.11 x 4.89 x 3.19mm
USD 45.90
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ID: 2883724 pcs
5.13ctw Kyanite
7.13 x 4.97 x 3.28mm
USD 121.84
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ID: 4052364 pcs
4.34ctw Topaz
6.97 x 4.93 x 3.47mm
USD 30.16
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ID: 3948672 pcs
3.04ctw Hessonite Garnet
7.07 x 5.16 x 3.75mm
USD 42.04
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ID: 3716828 pcs
11.13ctw Almandine Garnet
7.13 x 5.05 x 3.58mm
USD 55.65
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ID: 3941022 pcs
1.93ctw Hessonite Garnet
6.86 x 4.99 x 2.84mm
USD 26.92
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ID: 3919302 pcs
2.59ctw Hessonite Garnet
7.00 x 5.18 x 3.69mm
USD 51.80
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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