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U.S. gem production rises.

Authors
Austin-GT
Source
Colored Stone 1992 5(5):1
Link
NIOSHTIC No.
10011357
Abstract
Production of natural gemstones in the United States increased 60 pct to $84.4 million in 1991, according to estimates from the U.S. Bureau of Mines. The value of U.S. synthetic and simulated gem material production dropped, however, to $17.7 million, about 14 pct less than in 1990. In 1991, each of the 50 states produced at least $1,000 worth of gem materials, although 10 states accounted for about 93 pct of the total value.
Publication Date
19920101
Document Type
OP; Journal Article
Fiscal Year
1992
NTIS Accession No.
NTIS Price
Identifying No.
OP 253-92
Issue of Publication
5
ISSN
1046-462X
NIOSH Division
WO
Source Name
Colored Stone
State
DC
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