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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (212): Octagon Shape 7x5 mm Gems Clear All
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ID: 4304941 pcs
1.46ct Zircon
7.12mm x 4.92mm x 3.05mm
USD 36.50
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ID: 4305011 pcs
1.23ct Zircon
7.17mm x 4.91mm x 2.60mm
USD 30.75
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ID: 4052324 pcs
4.64ctw Topaz
7.07mm x 5.04mm x 3.65mm
USD 32.25
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ID: 4051164 pcs
4.46ctw Topaz
7.09mm x 5.06mm x 3.53mm
USD 31.00
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ID: 3786031 pcs
0.99ct Tourmaline
6.99mm x 5.05mm x 3.51mm
USD 45.04
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ID: 3789121 pcs
1.01ct Tourmaline
7.12mm x 5.03mm x 3.45mm
USD 45.96
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ID: 37153310 pcs
10.84ctw Almandine Garnet
7.00mm x 4.80mm x 2.87mm
USD 54.20
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ID: 4299931 pcs
1.36ct Zircon
6.91mm x 4.95mm x 2.92mm
USD 20.40
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ID: 4314891 pcs
1.01ct Hessonite Garnet
6.93mm x 5.17mm x 2.94mm
USD 18.18
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ID: 4299351 pcs
1.61ct Zircon
7.07mm x 5.02mm x 3.44mm
USD 24.15
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ID: 4039911 pcs
1.10ct Apatite
6.80mm x 4.83mm x 3.96mm
USD 41.17
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ID: 37154210 pcs
10.59ctw Almandine Garnet
6.96mm x 4.93mm x 2.50mm
USD 52.95
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ID: 3939872 pcs
2.25ctw Hessonite Garnet
6.74mm x 4.88mm x 3.43mm
USD 31.50
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ID: 3544364 pcs
4.12ctw Almandine Garnet
7.00mm x 5.06mm x 2.68mm
USD 20.60
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ID: 3973631 pcs
1.09ct Emerald
7.07mm x 4.97mm x 3.84mm
USD 326.18
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ID: 3936714 pcs
4.34ctw Hessonite Garnet
6.83mm x 4.97mm x 2.90mm
USD 60.76
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ID: 4305001 pcs
1.51ct Zircon
7.16mm x 4.84mm x 3.26mm
USD 37.75
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ID: 2857251 pcs
1.22ct Zircon
7.09mm x 4.85mm x 2.65mm
USD 16.65
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ID: 3965491 pcs
1.09ct Color-Change Diaspore
6.97mm x 4.86mm x 3.59mm
USD 52.06
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ID: 4052894 pcs
4.26ctw Topaz
7.06mm x 5.06mm x 3.38mm
USD 29.61
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ID: 3937272 pcs
2.98ctw Hessonite Garnet
6.85mm x 5.03mm x 4.23mm
USD 41.72
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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