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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (163): Octagon Shape 8x6 mm Gems Clear All
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ID: 3654682 pcs
3.86ctw Topaz
8.09mm x 6.10mm x 3.94mm
USD 21.42
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ID: 3723684 pcs
7.89ctw Topaz
8.05mm x 5.99mm x 3.97mm
USD 55.23
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ID: 3158421 pcs
1.80ct Topaz
7.92mm x 5.95mm x 3.82mm
USD 10.80
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ID: 3731554 pcs
8.41ctw Topaz
8.07mm x 6.09mm x 4.13mm
USD 51.13
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ID: 4196731 pcs
1.75ct Tourmaline
8.07mm x 6.11mm x 4.43mm
USD 262.50
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ID: 3731634 pcs
8.59ctw Topaz
8.13mm x 6.10mm x 4.33mm
USD 52.23
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ID: 3724184 pcs
8.25ctw Topaz
7.93mm x 6.01mm x 4.34mm
USD 57.75
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ID: 3722984 pcs
7.27ctw Topaz
7.97mm x 5.98mm x 3.82mm
USD 50.89
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ID: 3722714 pcs
8.62ctw Topaz
8.12mm x 6.13mm x 4.24mm
USD 60.34
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ID: 3674094 pcs
6.70ctw Topaz
8.13mm x 6.05mm x 3.42mm
USD 42.68
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ID: 3722974 pcs
8.56ctw Topaz
8.09mm x 6.08mm x 4.35mm
USD 59.92
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ID: 4313791 pcs
2.15ct Hessonite Garnet
8.05mm x 6.04mm x 4.24mm
USD 38.70
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ID: 3723724 pcs
8.64ctw Topaz
8.13mm x 6.10mm x 4.27mm
USD 60.48
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ID: 3346884 pcs
7.78ctw Topaz
8.06mm x 6.06mm x 4.00mm
USD 50.40
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ID: 3815084 pcs
6.94ctw Topaz
7.97mm x 6.02mm x 3.69mm
USD 48.58
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ID: 3723294 pcs
7.23ctw Topaz
8.09mm x 6.04mm x 3.69mm
USD 50.61
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ID: 3723014 pcs
7.34ctw Topaz
7.92mm x 5.93mm x 3.99mm
USD 51.38
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ID: 3723534 pcs
7.60ctw Topaz
8.14mm x 5.99mm x 3.39mm
USD 53.20
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ID: 3658874 pcs
7.30ctw Topaz
8.09mm x 6.07mm x 3.80mm
USD 44.90
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ID: 4313901 pcs
2.25ct Hessonite Garnet
7.95mm x 6.10mm x 4.42mm
USD 40.50
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ID: 3722725 pcs
9.12ctw Topaz
8.04mm x 6.04mm x 3.81mm
USD 63.84
Item in Stock
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Octagon Shape 8x6 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 8 x 6 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