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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: 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: 4297182 pcs
thumb image of 3.1ct Octagon Facet Orange Zircon (ID: 429718)
3.06ct Zircon
7.11 x 4.89 x 3.19mm
USD 45.90
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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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ID: 37153610 pcs
thumb image of 11.3ct Octagon Facet Red Almandine Garnet (ID: 371536)
11.34ct Almandine Garnet
6.83 x 4.89 x 3.34mm
USD 56.70
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ID: 4298651 pcs
thumb image of 1.4ct Octagon Facet Orange Zircon (ID: 429865)
1.35ct Zircon
7.22 x 4.88 x 2.86mm
USD 20.25
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ID: 4297981 pcs
thumb image of 1.6ct Octagon Facet Orange Zircon (ID: 429798)
1.55ct Zircon
7.12 x 5.08 x 3.19mm
USD 23.25
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ID: 4304981 pcs
thumb image of 1.9ct Octagon Facet Orange Zircon (ID: 430498)
1.87ct Zircon
7.17 x 5.08 x 3.63mm
USD 46.75
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ID: 3715326 pcs
thumb image of 6.3ct Octagon Facet Red Almandine Garnet (ID: 371532)
6.34ct Almandine Garnet
6.93 x 4.89 x 3.00mm
USD 31.70
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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: 3921444 pcs
thumb image of 4.9ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 392144)
4.86ct Hessonite Garnet
6.92 x 5.06 x 3.50mm
USD 97.20
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ID: 2756696 pcs
thumb image of 6.7ct Octagon Facet Yellow Golden Citrine (ID: 275669)
6.68ct Citrine
7.16 x 5.11 x 3.90mm
USD 35.07
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ID: 2883754 pcs
thumb image of 5.5ct Octagon Facet Blue Kyanite (ID: 288375)
5.45ct Kyanite
7.13 x 5.16 x 3.51mm
USD 129.44
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ID: 4299941 pcs
thumb image of 1.6ct Octagon Facet Golden Zircon (ID: 429994)
1.61ct Zircon
7.20 x 4.95 x 3.28mm
USD 24.15
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ID: 4399721 pcs
thumb image of 0.8ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 439972)
0.82ct Color-Change Diaspore
7.02 x 4.86 x 2.38mm
USD 22.96
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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: 3716828 pcs
thumb image of 11.1ct Octagon Facet Deep Red Almandine Garnet (ID: 371682)
11.13ct Almandine Garnet
7.13 x 5.05 x 3.58mm
USD 55.65
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ID: 4050862 pcs
thumb image of 2.2ct Octagon Facet Swiss Blue Topaz (ID: 405086)
2.17ct Topaz
7.24 x 5.08 x 3.26mm
USD 15.08
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ID: 3919292 pcs
thumb image of 2.2ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 391929)
2.19ct Hessonite Garnet
6.82 x 4.94 x 3.22mm
USD 43.80
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ID: 3919374 pcs
thumb image of 4.4ct Octagon Facet Cinnamon Orange Hessonite Garnet (ID: 391937)
4.35ct Hessonite Garnet
6.75 x 4.98 x 3.22mm
USD 87.00
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ID: 4298681 pcs
thumb image of 1.8ct Octagon Facet Orange Zircon (ID: 429868)
1.83ct Zircon
7.15 x 4.95 x 3.60mm
USD 27.45
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ID: 4261631 pcs
thumb image of 1ct Octagon Facet Golden Green Tourmaline (ID: 426163)
0.96ct Tourmaline
7.23 x 5.16 x 3.13mm
USD 18.40
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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