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You Selected (185): Octagon Shape 7x5 mm Gems Clear All
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ID: 3919292 pcs
thumb image of 2.2ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 391929)
2.19 ct Hessonite Garnet
6.8 x 4.9 mm
$ 43.80
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ID: 3938574 pcs
thumb image of 4.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393857)
4.42 ct Hessonite Garnet
6.9 x 4.9 mm
$ 61.88
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ID: 2756686 pcs
thumb image of 6.9ct Octagon Step Cut Yellow Golden Citrine (ID: 275668)
6.86 ct Citrine
7 x 5 mm
$ 36.02
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ID: 3941742 pcs
thumb image of 2.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 394174)
2.36 ct Hessonite Garnet
6.8 x 4.9 mm
$ 32.92
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ID: 3919282 pcs
thumb image of 2.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 391928)
2.43 ct Hessonite Garnet
6.9 x 5 mm
$ 48.60
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ID: 3938512 pcs
thumb image of 2.6ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393851)
2.57 ct Hessonite Garnet
6.9 x 5.1 mm
$ 35.98
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ID: 3716786 pcs
thumb image of 7.8ct Octagon Facet Deep Red Almandine Garnet (ID: 371678)
7.77 ct Almandine Garnet
7.1 x 5 mm
$ 38.85
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ID: 4483834 pcs
thumb image of 4.8ct Octagon Step Cut Swiss Blue Topaz (ID: 448383)
4.80 ct Topaz
7 x 5 mm
$ 31.34
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ID: 37153510 pcs
thumb image of 10.2ct Octagon Facet Red Almandine Garnet (ID: 371535)
10.17 ct Almandine Garnet
7 x 4.9 mm
$ 50.85
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ID: 37154210 pcs
thumb image of 10.6ct Octagon Facet Red Almandine Garnet (ID: 371542)
10.59 ct Almandine Garnet
7 x 4.9 mm
$ 52.95
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ID: 3936714 pcs
thumb image of 4.3ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393671)
4.34 ct Hessonite Garnet
6.8 x 5 mm
$ 60.76
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ID: 37168410 pcs
thumb image of 10.9ct Octagon Facet Deep Red Almandine Garnet (ID: 371684)
10.85 ct Almandine Garnet
7 x 5 mm
$ 54.25
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ID: 3716838 pcs
thumb image of 10.9ct Octagon Facet Deep Red Almandine Garnet (ID: 371683)
10.90 ct Almandine Garnet
7.1 x 5.1 mm
$ 54.50
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ID: 37168510 pcs
thumb image of 10.9ct Octagon Facet Deep Red Almandine Garnet (ID: 371685)
10.91 ct Almandine Garnet
7 x 5 mm
$ 54.55
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ID: 37154010 pcs
thumb image of 10.5ct Octagon Facet Red Almandine Garnet (ID: 371540)
10.52 ct Almandine Garnet
6.9 x 5 mm
$ 52.60
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ID: 2883894 pcs
thumb image of 4.9ct Octagon Facet Blue Kyanite (ID: 288389)
4.89 ct Kyanite
7.1 x 5.1 mm
$ 116.14
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ID: 37154110 pcs
thumb image of 11ct Octagon Facet Red Almandine Garnet (ID: 371541)
10.98 ct Almandine Garnet
6.9 x 4.9 mm
$ 54.90
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ID: 2883974 pcs
thumb image of 4.9ct Octagon Facet Blue Kyanite (ID: 288397)
4.90 ct Kyanite
7 x 5.1 mm
$ 116.38
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ID: 2883724 pcs
thumb image of 5.1ct Octagon Step Cut Blue Kyanite (ID: 288372)
5.13 ct Kyanite
7.1 x 5 mm
$ 121.84
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ID: 3716828 pcs
thumb image of 11.1ct Octagon Facet Deep Red Almandine Garnet (ID: 371682)
11.13 ct Almandine Garnet
7.1 x 5.1 mm
$ 55.65
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ID: 37153610 pcs
thumb image of 11.3ct Octagon Facet Red Almandine Garnet (ID: 371536)
11.34 ct Almandine Garnet
6.8 x 4.9 mm
$ 56.70
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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