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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (193): Octagon Shape 7x5 mm Gems Clear All
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ID: 37153510 pcs
thumb image of 10.2ct Octagon Facet Red Almandine Garnet (ID: 371535)
10.17ct Almandine Garnet
6.96 x 4.93 x 2.50mm
USD 50.85
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ID: 4305011 pcs
thumb image of 1.2ct Octagon Facet Orange Zircon (ID: 430501)
1.23ct Zircon
7.17 x 4.91 x 2.60mm
USD 30.75
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ID: 4305031 pcs
thumb image of 1.4ct Octagon Facet Orange Zircon (ID: 430503)
1.41ct Zircon
6.90 x 4.96 x 3.06mm
USD 35.25
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ID: 4298601 pcs
thumb image of 1.8ct Octagon Facet Orange Zircon (ID: 429860)
1.79ct Zircon
7.21 x 5.20 x 3.36mm
USD 26.85
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ID: 3937292 pcs
thumb image of 2.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393729)
2.44ct Hessonite Garnet
6.88 x 5.06 x 3.43mm
USD 34.16
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ID: 3786031 pcs
thumb image of 1ct Octagon Facet Yellowish Green Tourmaline (ID: 378603)
0.99ct Tourmaline
6.99 x 5.05 x 3.51mm
USD 45.04
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ID: 2883724 pcs
thumb image of 5.1ct Octagon Facet Blue Kyanite (ID: 288372)
5.13ct Kyanite
7.13 x 4.97 x 3.28mm
USD 121.84
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ID: 3988394 pcs
thumb image of 5.6ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 398839)
5.56ct Hessonite Garnet
6.92 x 5.01 x 3.99mm
USD 111.20
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ID: 3941012 pcs
thumb image of 2.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 394101)
2.92ct Hessonite Garnet
6.78 x 4.99 x 4.12mm
USD 40.73
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ID: 2751585 pcs
thumb image of 5.6ct Octagon Facet Yellow Golden Citrine (ID: 275158)
5.57ct Citrine
7.09 x 5.08 x 4.03mm
USD 29.24
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ID: 37153710 pcs
thumb image of 12.2ct Octagon Facet Red Almandine Garnet (ID: 371537)
12.18ct Almandine Garnet
6.92 x 4.93 x 3.33mm
USD 60.90
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ID: 3938552 pcs
thumb image of 2.7ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393855)
2.67ct Hessonite Garnet
6.95 x 5.00 x 3.76mm
USD 37.38
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ID: 3397485 pcs
thumb image of 6.2ct Octagon Facet Deep Red Almandine Garnet (ID: 339748)
6.23ct Almandine Garnet
6.96 x 4.97 x 3.37mm
USD 34.02
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ID: 4052324 pcs
thumb image of 4.6ct Octagon Facet Swiss Blue Topaz (ID: 405232)
4.64ct Topaz
7.07 x 5.04 x 3.65mm
USD 32.25
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ID: 4051124 pcs
thumb image of 4.8ct Octagon Facet Swiss Blue Topaz (ID: 405112)
4.77ct Topaz
7.08 x 5.08 x 3.53mm
USD 33.15
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ID: 4051234 pcs
thumb image of 4.2ct Octagon Facet Swiss Blue Topaz (ID: 405123)
4.24ct Topaz
7.07 x 5.02 x 3.27mm
USD 29.47
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ID: 4052394 pcs
thumb image of 4.2ct Octagon Facet Swiss Blue Topaz (ID: 405239)
4.23ct Topaz
7.04 x 5.06 x 3.28mm
USD 29.40
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ID: 2883974 pcs
thumb image of 4.9ct Octagon Facet Blue Kyanite (ID: 288397)
4.90ct Kyanite
6.96 x 5.07 x 3.09mm
USD 116.38
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ID: 3919302 pcs
thumb image of 2.6ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 391930)
2.59ct Hessonite Garnet
7.00 x 5.18 x 3.69mm
USD 51.80
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ID: 4252571 pcs
thumb image of 1ct Octagon Facet Light Blue Aquamarine (ID: 425257)
0.99ct Aquamarine
7.13 x 5.02 x 3.47mm
USD 39.60
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ID: 3970181 pcs
thumb image of 1ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 397018)
1.03ct Color-Change Diaspore
6.75 x 4.87 x 3.40mm
USD 49.19
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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