Mica in Peridot
Article Abstract:
Peridot is a gem with a yellowish green color that is double refractive and scratch resistant but is brittle and easily chipped. Peridots are mined from southwestern states of the US but can also be found in St. John's Island and Antarctica. Antarctic peridots contain mica crystals such as biotite.
Publisher: Lapidary Journal Inc.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1993
Analysis, Mica, Peridot
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1993
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In the Star of Bombay
Article Abstract:
The Star of Bombay is a 182-carat blue star sapphire owned by the National Museum of Natural History. Microscope examination reveals that the Star of Bombay has several distinctive inclusions one does not expect of Sri Lankan sapphires.
Publisher: Lapidary Journal Inc.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1995
Sapphires
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1995
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