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St. Matthew Sterling Silver Ring, 18 mm round top
St. Matthew Sterling Silver Ring, 18 mm round top
$199.99
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St. Peter Sterling Silver Ring, 18 mm round top
St. Peter Sterling Silver Ring, 18 mm round top
$199.99
Sale: $149.99
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St. Gerard Sterling Silver Ring, 18 mm round top
St. Gerard Sterling Silver Ring, 18 mm round top
$199.99
Sale: $149.99
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Iolite

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
 
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