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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: 4297262 pcs
3.40ctw Zircon
7.10mm x 5.03mm x 3.42mm
USD 51.00
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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: 3715316 pcs
7.07ctw Almandine Garnet
6.99mm x 4.95mm x 3.25mm
USD 35.35
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ID: 2751635 pcs
5.77ctw Citrine
7.00mm x 5.11mm x 4.74mm
USD 30.29
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ID: 2883974 pcs
4.90ctw Kyanite
6.96mm x 5.07mm x 3.09mm
USD 116.38
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ID: 2751615 pcs
5.58ctw Citrine
7.09mm x 4.97mm x 4.10mm
USD 29.30
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ID: 4299951 pcs
1.63ct Zircon
7.06mm x 4.99mm x 3.36mm
USD 24.45
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ID: 3921424 pcs
5.27ctw Hessonite Garnet
6.79mm x 4.95mm x 3.95mm
USD 105.40
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ID: 4305021 pcs
1.52ct Zircon
7.13mm x 4.94mm x 3.28mm
USD 38.00
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ID: 3892431 pcs
0.90ct Kornerupine
7.06mm x 5.13mm x 2.94mm
USD 78.26
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ID: 3941072 pcs
2.36ctw Hessonite Garnet
6.76mm x 4.90mm x 3.71mm
USD 32.92
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ID: 3937342 pcs
2.38ctw Hessonite Garnet
6.93mm x 5.02mm x 3.44mm
USD 33.32
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ID: 3919302 pcs
2.59ctw Hessonite Garnet
7.00mm x 5.18mm x 3.69mm
USD 51.80
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ID: 4052374 pcs
4.47ctw Topaz
7.06mm x 5.02mm x 3.40mm
USD 31.07
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ID: 3235591 pcs
0.94ct Emerald
6.90mm x 4.89mm x 3.40mm
USD 248.16
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ID: 4297212 pcs
3.09ctw Zircon
7.14mm x 5.13mm x 2.89mm
USD 46.35
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ID: 4052334 pcs
4.71ctw Topaz
7.08mm x 5.06mm x 3.54mm
USD 32.73
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ID: 3942764 pcs
4.04ctw Hessonite Garnet
6.77mm x 4.90mm x 3.04mm
USD 56.36
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ID: 3919292 pcs
2.19ctw Hessonite Garnet
6.82mm x 4.94mm x 3.22mm
USD 43.80
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ID: 4297921 pcs
1.50ct Zircon
7.21mm x 5.02mm x 3.01mm
USD 22.50
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ID: 2883674 pcs
5.30ctw Kyanite
7.27mm x 5.15mm x 3.20mm
USD 125.88
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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