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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (202): Octagon Shape 7x5 mm Gems Clear All
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ID: 3963381 pcs
0.86ct Color-Change Diaspore
6.95mm x 4.87mm x 2.62mm
USD 41.07
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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: 3921444 pcs
4.86ctw Hessonite Garnet
6.92mm x 5.06mm x 3.50mm
USD 97.20
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ID: 4298601 pcs
1.79ct Zircon
7.21mm x 5.20mm x 3.36mm
USD 26.85
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ID: 4051204 pcs
4.31ctw Topaz
6.94mm x 4.99mm x 3.36mm
USD 29.95
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ID: 4297202 pcs
3.04ctw Zircon
7.25mm x 5.04mm x 3.05mm
USD 45.60
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ID: 3921514 pcs
4.82ctw Hessonite Garnet
6.81mm x 4.97mm x 3.75mm
USD 96.40
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ID: 4305441 pcs
0.75ct Iolite
6.97mm x 4.95mm x 2.85mm
USD 15.00
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ID: 4257111 pcs
0.77ct Tourmaline
6.81mm x 4.81mm x 3.01mm
USD 14.76
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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: 4299941 pcs
1.61ct Zircon
7.20mm x 4.95mm x 3.28mm
USD 24.15
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ID: 3716806 pcs
6.34ctw Almandine Garnet
6.92mm x 5.01mm x 2.89mm
USD 31.70
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ID: 3948732 pcs
2.63ctw Hessonite Garnet
6.82mm x 5.00mm x 3.98mm
USD 36.37
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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: 3988394 pcs
5.56ctw Hessonite Garnet
6.92mm x 5.01mm x 3.99mm
USD 111.20
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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: 4052294 pcs
5.02ctw Topaz
7.08mm x 5.05mm x 3.83mm
USD 34.89
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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: 3941722 pcs
2.56ctw Hessonite Garnet
6.93mm x 5.02mm x 3.70mm
USD 35.71
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ID: 2883934 pcs
4.94ctw Kyanite
7.21mm x 5.17mm x 3.36mm
USD 117.33
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ID: 2756676 pcs
6.92ctw Citrine
7.13mm x 5.08mm x 4.05mm
USD 36.33
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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