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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (200): Octagon Shape 7x5 mm Gems Clear All
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ID: 4052344 pcs
5.02ctw Topaz
7.13mm x 5.10mm x 3.76mm
USD 34.89
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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: 4297921 pcs
1.50ct Zircon
7.21mm x 5.02mm x 3.01mm
USD 22.50
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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: 4297202 pcs
3.04ctw Zircon
7.25mm x 5.04mm x 3.05mm
USD 45.60
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ID: 4297901 pcs
1.66ct Zircon
7.28mm x 5.10mm x 3.17mm
USD 24.90
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ID: 3937292 pcs
2.44ctw Hessonite Garnet
6.88mm x 5.06mm x 3.43mm
USD 34.16
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ID: 4142621 pcs
1.34ct Tourmaline
6.75mm x 4.96mm x 4.53mm
USD 32.74
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ID: 37153710 pcs
12.18ctw Almandine Garnet
6.92mm x 4.93mm x 3.33mm
USD 60.90
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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: 4261631 pcs
0.96ct Tourmaline
7.23mm x 5.16mm x 3.13mm
USD 18.40
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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: 2756895 pcs
4.82ctw Citrine
6.83mm x 5.03mm x 3.93mm
USD 25.31
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ID: 3941062 pcs
2.61ctw Hessonite Garnet
6.92mm x 4.98mm x 4.10mm
USD 36.41
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ID: 4302461 pcs
0.71ct Iolite
7.03mm x 5.08mm x 2.59mm
USD 14.20
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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: 3988394 pcs
5.56ctw Hessonite Garnet
6.92mm x 5.01mm x 3.99mm
USD 111.20
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ID: 4298701 pcs
1.58ct Zircon
7.09mm x 4.99mm x 3.33mm
USD 23.70
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ID: 4013791 pcs
1.00ct Tourmaline
6.94mm x 4.91mm x 3.22mm
USD 48.08
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ID: 4051234 pcs
4.24ctw Topaz
7.07mm x 5.02mm x 3.27mm
USD 29.47
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ID: 4304961 pcs
1.62ct Zircon
7.21mm x 4.96mm x 3.48mm
USD 40.50
Item in Stock
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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