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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (155): Octagon Shape 8x6 mm Gems Clear All
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ID: 3731604 pcs
8.02ctw Topaz
8.16 x 6.12 x 4.18mm
USD 48.76
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ID: 3731584 pcs
8.32ctw Topaz
8.08 x 6.08 x 4.10mm
USD 50.59
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ID: 3658874 pcs
7.30ctw Topaz
8.09 x 6.07 x 3.80mm
USD 44.90
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ID: 3731564 pcs
8.16ctw Topaz
8.10 x 6.10 x 4.12mm
USD 49.61
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ID: 3941732 pcs
3.26ctw Hessonite Garnet
7.91 x 6.02 x 3.40mm
USD 45.48
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ID: 3941782 pcs
3.59ctw Hessonite Garnet
7.94 x 5.96 x 3.86mm
USD 50.08
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ID: 3654682 pcs
3.86ctw Topaz
8.09 x 6.10 x 3.94mm
USD 21.42
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ID: 3671142 pcs
3.83ctw Topaz
8.02 x 6.14 x 3.99mm
USD 24.40
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ID: 3723744 pcs
7.62ctw Topaz
8.01 x 6.01 x 4.04mm
USD 53.34
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ID: 3941812 pcs
3.37ctw Hessonite Garnet
7.97 x 6.12 x 3.61mm
USD 47.01
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ID: 3723234 pcs
8.04ctw Topaz
7.97 x 5.95 x 4.16mm
USD 56.28
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ID: 3724214 pcs
7.38ctw Topaz
7.93 x 6.01 x 3.81mm
USD 51.66
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ID: 3674074 pcs
7.86ctw Topaz
8.09 x 6.06 x 3.93mm
USD 50.07
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ID: 3724224 pcs
8.65ctw Topaz
8.12 x 6.09 x 4.30mm
USD 60.55
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ID: 3723024 pcs
8.37ctw Topaz
8.11 x 6.11 x 4.24mm
USD 58.59
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ID: 2887721 pcs
2.01ct Topaz
7.97 x 6.02 x 4.39mm
USD 12.66
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ID: 3731594 pcs
7.76ctw Topaz
8.16 x 6.11 x 3.90mm
USD 47.18
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ID: 3673491 pcs
1.95ct Topaz
7.95 x 6.02 x 4.19mm
USD 12.42
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ID: 3723544 pcs
8.25ctw Topaz
8.13 x 6.16 x 4.09mm
USD 57.75
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ID: 4057071 pcs
2.21ct Topaz
8.21 x 6.19 x 4.03mm
USD 15.40
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ID: 3723264 pcs
7.79ctw Topaz
8.03 x 6.03 x 4.09mm
USD 54.53
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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