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St. Stephanie Silver Rope Style Pendant Medal
St. Stephanie Silver Rope Style Pendant Medal
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St. Sarah Silver Rope Style Pendant Medal
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St. Theresa Silver Rope Style Pendant Medal
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Topaz, London Blue

London Blue Topaz Gemstone Information
Information * Loose gemstones * Jewelry links
Topaz is the gemstone representing the 4th and 19th wedding anniversaries. The name topaz comes from Topazios; an island in the Red Sea. In 15th century Rome, topaz was used to detect poisons, calm anger, and break spells. Christian's believed topaz stood for uprightness; and to Hindu's, topaz worn above the heart prevented thirst and assured long life, beauty, and intelligence. The Greek's felt topaz gave them strength and was used as an amulet against harm.
 

ENHANCEMENT CODE R
Click to view AGTA code.

PROPERTIES
Refractive Index 1.619-1.627
Hardness = 8 (Moh's Scale).
Specific Gravity =3.53
Species - Topaz.
Optic Character - Double Refraction.
Phenomena - Chatoyancy.


WARNINGS FOR CARE
Ultrasonic: Never use.
Steamer: Never use.
Heat: Poor; color change may occur with heat.
Chemicals that harm: affected very slightly.

 


Crystal Structure
London blue topaz crystal image.
Crystal system: Orthorhombic, prisms with multi faceted ends.

MAJOR SOURCES
Brazil, Nigeria, Australia, Myanmar, Mexico, Namibia, Pakistan, Sri Lanka
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
Common Cut Examples.
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