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Alexandrite

Alexandrite is one of the rarest of all colored gemstones and is famed for its color change from green in daylight to red under incandescent light. Fine faceted alexandrite over 1 carat is more valuable than sapphire, ruby or emerald.

Alexandrite is a variety of chrysoberyl, with an excellent hardness of 8.5 on the Mohs scale, placing it right behind sapphire and ruby. Alexandrite is rare because of its chemical composition. Chrysoberyl is colored by traces iron and titanium, but alexandrite is also colored by chromium, which gives it the emerald green hue in daylight.

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I am so pleased with the gems I purchased. I will recommend you to all my friends
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Nice inventory, decent pricing. Site is easy to navigate.
Posted By Bob in December, 2019
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I love GemSelect! Every stone that I ever purchased has been carefully packaged, and sometimes comes with origin info. The stone I just ordered is for my engagement ring, because my Fiance is making my ring! I am so amazed with the selection that this site has, and I am so impressed with the prices.
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Site layout was great. Item description was good but this is first purchase so I will have to wait and see how satisfied I am with product. But this step of process was great!
Posted By Leell in December, 2019
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i saw a program on the science channel about varieties of fluorite - a special on John 'something' from perhaps wales and varieties of colors... and i was chatting w/ friend who sent me link to your site
Posted By DrLaura in December, 2019
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More Shapes
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Popular Gemstones
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All Gemstones (144)
A B C D E F G H I J K L M N O P Q R S T V Z
    A Back to Top
  		•  Actinolite Cat's Eye
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    • B Back to Top
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    • C Back to Top
  		•  Calcite
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  		• Cat's Eye Gemstones
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  		• Chalcedony
  		• Charoite
  		• Chocolate Opal
  		• Chrome Diopside
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  		• Chrysoberyl
  		• Chrysocolla
  		• Chrysoprase
  		• Citrine
  		• Color-Change Diaspore
  		• Color-Change Fluorite
  		• Color-Change Garnet
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  		• Coral
    • D Back to Top
  		•  Demantoid Garnet
  		• Dendritic Agate
  		• Diamond
  		• Druzy Amethyst
  		• Druzy Azurite
    • E Back to Top
  		•  Emerald
  		• Enstatite
    • F Back to Top
  		•  Fire Agate
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  		• Fluorite
  		• Fossil Coral
    • G Back to Top
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  		• Golden Beryl
  		• Grandidierite
  		• Grossularite Garnet
    • H Back to Top
  		•  Hawk's Eye
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  		• Hemimorphite Druzy
  		• Hessonite Garnet
  		• Hiddenite
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    • I Back to Top
  		•  Idocrase
  		• Imperial Topaz
  		• Iolite
    • J Back to Top
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    • K Back to Top
  		•  Kornerupine
  		• Kunzite
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    • L Back to Top
  		•  Labradorite
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    • M Back to Top
  		•  Malachite
  		• Malaya Garnet
  		• Mali Garnet
  		• Maw-Sit-Sit
  		• Moonstone
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  		• Moss Opal
  		• Mother of Pearl
  		• Mystic Quartz
  		• Mystic Topaz
    • N Back to Top
  		•  Nuummite
    • O Back to Top
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  		• Opal
  		• Opal Doublet
  		• Opal in Matrix
    • P Back to Top
  		•  Pearl
  		• Peridot
  		• Pietersite
  		• Prehnite
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  		• Pyrope Garnet
    • Q Back to Top
  		•  Quartz
  		• Quartz Cat's Eye
  		• Quartz With Marcasite
    • R Back to Top
  		•  Rainbow Moonstone
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  		• Rhodolite Garnet
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  		• Rose Quartz
  		• Rubellite Tourmaline
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  		• Ruby in Fuchsite
  		• Ruby-Zoisite
  		• Rutile Quartz
    • S Back to Top
  		•  Sapphire
  		• Scolecite
  		• Seraphinite
  		• Serpentine
  		• Sillimanite
  		• Sillimanite Cat's Eye
  		• Smithsonite
  		• Smoky Quartz
  		• Snowflake Obsidian
  		• Sodalite
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  		• Sugilite
  		• Sunstone
    • T Back to Top
  		•  Tanzanite
  		• Tiger's Eye
  		• Tiger's Eye Matrix
  		• Topaz
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  		• Tsavorite Garnet
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    • V Back to Top
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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

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