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Octagon Calibrated Gems for Standard Jewelry Mountings (Settings) from GemSelect.com
 
Octagon Shape / Emerald-Cut Gemstones • Weight Comparison Chart
 
Click here to see all Octagon / Emerald-Cut Gems in Size:
5 x 3
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
6 x 4
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
7 x 5
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
8 x 6
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
9 x 7
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
10 x 8
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
11 x 9
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
12 x 10
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
14 x 12
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
16 x 12
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
18 x 13
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
20 x 15
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
25 x 18
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
27 x 20
 mm
Click here to see all Octagon / Emerald-Cut Gems in Size:
20 x 222
 mm
 
 
  • First Published: February-20-2006
  • Last Updated: October-19-2010
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All Gemstones (136)
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    • B Back to Top
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    • C Back to Top
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    • D Back to Top
  		•  Demantoid Garnet
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    • E Back to Top
  		•  Emerald
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    • F Back to Top
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    • G Back to Top
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    • H Back to Top
  		•  Hematite
  		• Hemimorphite
  		• Hemimorphite Druzy
  		• Hessonite Garnet
  		• Howlite
    • I Back to Top
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  		• Imperial Topaz
  		• Iolite
    • J Back to Top
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    • K Back to Top
  		•  Kornerupine
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    • L Back to Top
  		•  Labradorite
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  		• Larimar
    • M Back to Top
  		•  Malachite
  		• Malaya Garnet
  		• Mali Garnet
  		• Maw-Sit-Sit
  		• Moonstone
  		• Morganite
  		• Mother Of Pearl
  		• Mystic Topaz
    • N Back to Top
  		•  Nuummite
    • O Back to Top
  		•  Obsidian
  		• Opal
  		• Opal Doublet
  		• Opal In Matrix
    • P Back to Top
  		•  Pearl
  		• Peridot
  		• Pietersite
  		• Prehnite
  		• Pyrite
  		• Pyrope Garnet
    • Q Back to Top
  		•  Quartz
  		• Quartz Cat's Eye
  		• Quartz With Hedenbergite
  		• Quartz With Marcasite
    • R Back to Top
  		•  Rainbow Moonstone
  		• Rainbow Pyrite
  		• Rhodochrosite
  		• Rhodolite Garnet
  		• Rose Quartz
  		• Rubellite Tourmaline
  		• Ruby
  		• Ruby In Fuchsite
  		• Ruby-Zoisite
  		• Rutile Quartz
    • S Back to Top
  		•  Sapphire
  		• Scapolite
  		• Scolecite
  		• Seraphinite
  		• Sillimanite
  		• Sillimanite Cat's Eye
  		• Smithsonite
  		• Smoky Quartz
  		• Snowflake Obsidian
  		• Sodalite
  		• Spectrolite
  		• Spessartite Garnet
  		• Sphene
  		• Spinel
  		• Star Diopside
  		• Star Garnet
  		• Star Gemstones
  		• Star Moonstone
  		• Star Rose Quartz
  		• Star Ruby
  		• Star Sapphire
  		• Strawberry Quartz
  		• Sunstone
    • T Back to Top
  		•  Tanzanite
  		• Tiger's Eye
  		• Tiger's Eye Matrix
  		• Topaz
  		• Tourmaline
  		• Tsavorite Garnet
  		• Turquoise
    • V Back to Top
  		•  Variscite
    • Z Back to Top
  		•  Zircon
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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