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Tanzanite Gemstone Information
Information * Loose gemstones * Jewelry links
Tanzanite is the gemstone representing the 24th wedding anniversary. It has been recognized as helping one deal with change. Tanzanite is also known to uplift the spirit and open the heart. The blue and purple hues of tanzanite are associated with generosity and friendship.
View examples of cut tanzanite below and prices in our store section.
 

ENHANCEMENT CODE H
Click to view AGTA code.

 PROPERTIES
Refractive Index 1.691-1.700
Hardness = 6-7 (Moh's Scale)
Specific Gravity =3.35
Species - Zoisite
Optic Character - Double Refraction.
Phenomena - Chatoyancy (rare)

WARNINGS FOR CARE
Ultrasonic: Never use.
Steamer: Never use.
Heat: Very poor; sudden temperature changes may cause cracking.
Chemicals that harm:  Hydrochloric/hydrofluoric acid.
 		  

Crystal Structure
Tanzanite crystal image.
Crystal system: Orthorhombic; multi-faced prisms, striated.
MAJOR SOURCES
Tanzania

 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
 
Round brilliant cut tanzanite.
Round cut.		 Oval shape tanzanite.
Oval shape.		 Pear shape tanzanite.
Pear shape.
Marquise cut tanzanite.
Marquise cut.		 Trillion cut tanzanite.
Trillion cut.		 Emerald cut tanzanite.
Emerald cut.
Straight baguette tanzanite.
Straight Baguette.		 Princess cut tanzanite.
Princess cut.
Step cut.		 Modified square cut tanzanite.
Modified square.
 
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Shipping Continuous United States, Alaska and Hawaii.
Prices in US Dollars subject to change without notice.