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You Selected (189): Octagon Shape 7x5 mm Gems Clear All
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ID: 4314891 pcs
thumb image of 1ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 431489)
1.01ct Hessonite Garnet
6.93 x 5.17 x 2.94mm
USD 18.18
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ID: 3939802 pcs
thumb image of 1.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393980)
1.90ct Hessonite Garnet
6.93 x 4.92 x 2.80mm
USD 26.60
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ID: 2756895 pcs
thumb image of 4.8ct Octagon Step Cut Yellow Golden Citrine (ID: 275689)
4.82ct Citrine
6.83 x 5.03 x 3.93mm
USD 25.31
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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: 37170212 pcs
thumb image of 13.4ct Octagon Facet Red Almandine Garnet (ID: 371702)
13.39ct Almandine Garnet
7.23 x 5.00 x 2.77mm
USD 66.95
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ID: 4052314 pcs
thumb image of 4.7ct Octagon Facet Swiss Blue Topaz (ID: 405231)
4.72ct Topaz
7.08 x 5.05 x 3.59mm
USD 32.80
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ID: 4051204 pcs
thumb image of 4.3ct Octagon Facet Swiss Blue Topaz (ID: 405120)
4.31ct Topaz
6.94 x 4.99 x 3.36mm
USD 29.95
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ID: 3892431 pcs
thumb image of 0.9ct Octagon Facet Yellowish Green Kornerupine (ID: 389243)
0.90ct Kornerupine
7.06 x 5.13 x 2.94mm
USD 78.26
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ID: 4297272 pcs
thumb image of 2.7ct Octagon Facet Orange Zircon (ID: 429727)
2.68ct Zircon
7.21 x 4.96 x 2.75mm
USD 40.20
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ID: 3938574 pcs
thumb image of 4.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393857)
4.42ct Hessonite Garnet
6.88 x 4.86 x 3.48mm
USD 61.88
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ID: 3939872 pcs
thumb image of 2.3ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393987)
2.25ct Hessonite Garnet
6.74 x 4.88 x 3.43mm
USD 31.50
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ID: 3988384 pcs
thumb image of 4.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 398838)
4.36ct Hessonite Garnet
6.77 x 4.98 x 3.23mm
USD 87.20
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ID: 3716806 pcs
thumb image of 6.3ct Octagon Facet Deep Red Almandine Garnet (ID: 371680)
6.34ct Almandine Garnet
6.92 x 5.01 x 2.89mm
USD 31.70
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ID: 3716756 pcs
thumb image of 6.9ct Octagon Facet Deep Red Almandine Garnet (ID: 371675)
6.86ct Almandine Garnet
6.99 x 5.01 x 3.07mm
USD 34.30
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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: 3938512 pcs
thumb image of 2.6ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393851)
2.57ct Hessonite Garnet
6.93 x 5.09 x 3.71mm
USD 35.98
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ID: 3939862 pcs
thumb image of 2.2ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 393986)
2.21ct Hessonite Garnet
6.91 x 4.99 x 3.34mm
USD 30.94
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ID: 4299951 pcs
thumb image of 1.6ct Octagon Facet Orange Zircon (ID: 429995)
1.63ct Zircon
7.06 x 4.99 x 3.36mm
USD 24.45
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ID: 37154310 pcs
thumb image of 12ct Octagon Facet Red Almandine Garnet (ID: 371543)
11.99ct Almandine Garnet
7.07 x 5.00 x 3.11mm
USD 59.95
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ID: 3949574 pcs
thumb image of 4.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 394957)
4.86ct Hessonite Garnet
6.87 x 4.99 x 3.61mm
USD 67.21
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ID: 3921474 pcs
thumb image of 4.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 392147)
4.91ct Hessonite Garnet
7.01 x 5.06 x 3.49mm
USD 98.20
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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