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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (207): Octagon Shape 7x5 mm Gems Clear All
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ID: 3715276 pcs
6.59ctw Almandine Garnet
6.95mm x 4.92mm x 3.09mm
USD 32.95
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ID: 37153410 pcs
12.70ctw Almandine Garnet
7.06mm x 5.11mm x 3.03mm
USD 63.50
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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: 3988384 pcs
4.36ctw Hessonite Garnet
6.77mm x 4.98mm x 3.23mm
USD 87.20
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ID: 4297252 pcs
2.98ctw Zircon
7.15mm x 5.08mm x 2.83mm
USD 44.70
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ID: 3937282 pcs
2.46ctw Hessonite Garnet
6.91mm x 4.93mm x 3.75mm
USD 34.44
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ID: 4297981 pcs
1.55ct Zircon
7.12mm x 5.08mm x 3.19mm
USD 23.25
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ID: 4297931 pcs
1.62ct Zircon
7.18mm x 5.06mm x 3.18mm
USD 24.30
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ID: 4051224 pcs
4.71ctw Topaz
7.11mm x 5.06mm x 3.48mm
USD 32.73
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ID: 3787101 pcs
1.10ct Tourmaline
7.11mm x 5.06mm x 3.69mm
USD 50.05
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ID: 4051124 pcs
4.77ctw Topaz
7.08mm x 5.08mm x 3.53mm
USD 33.15
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ID: 3938574 pcs
4.42ctw Hessonite Garnet
6.88mm x 4.86mm x 3.48mm
USD 61.88
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ID: 4052354 pcs
4.52ctw Topaz
6.98mm x 5.00mm x 3.51mm
USD 31.41
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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: 4052314 pcs
4.72ctw Topaz
7.08mm x 5.05mm x 3.59mm
USD 32.80
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ID: 3939812 pcs
2.43ctw Hessonite Garnet
6.75mm x 4.97mm x 3.67mm
USD 34.02
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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: 4297222 pcs
2.75ctw Zircon
7.17mm x 5.02mm x 2.80mm
USD 41.25
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ID: 3378921 pcs
0.88ct Emerald
6.90mm x 4.94mm x 3.50mm
USD 237.60
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ID: 4298611 pcs
1.34ct Zircon
7.23mm x 4.89mm x 2.62mm
USD 20.10
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ID: 3948672 pcs
3.04ctw Hessonite Garnet
7.07mm x 5.16mm x 3.75mm
USD 42.04
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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