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Iolite Gemstone Information
Information * Loose gemstones * Jewelry links

Iolite is the gemstone representing the 21st wedding anniversary. The name is derived from the Greek word ios, meaning "violet." Iolite is known as the gemstone of clear vision. It was believed to have the power to guide lost sailors to the brilliance of the sun in order to find their way home.
 

ENHANCEMENT CODE N

Click to view AGTA code.

PROPERTIES
Refractive Index 1.542-1.551
Hardness = 7-7.5 (Moh's Scale)
Specific Gravity = 2.61
Species - Iolite
Optic Character - Double Refraction.
Phenomena - Rare


WARNINGS FOR CARE
Ultrasonic: Risky
Steamer: Risky
Heat: Fusible
Chemicals that harm: Acids

 

Crystal Structure
Iolite crystal image.
Crystal system: Orthorhombic short prisms.

MAJOR SOURCES
India, Tanzania, Brazil, Sri Lanka, Madagascar, Namibia, Myanmar
Birthstones
 January  Garnet
February Amethyst
March Aquamarine
April Diamond
May Emerald
June Pearl/Alexandrite
July Ruby
August Peridot
September Sapphire
October Opal/Tourmaline
November Topaz or Citrine
December Blue Topaz or Zircon
 

Marquise cut iolite image.
Marquise cut.
 
Emerald cut iolite image.
Emerald cut.
Oval shape iolite image.
Oval shape.
Pear shape iolite image.
Pear shape.

Round cut iolite image.
Round cut.

Princess cut iolite image.
Square cuts.
Step cut.
-

Straight baguette iolite image.
Straight baguette.
 

Trillion cut iolite image.
Trillion cut.

Heart cabochon iolite image.
Heart shape.
 

Square cut iolite image.
Modified step cut.


 

 
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Prices in US Dollars subject to change without notice.