- A
gemstone (also
called a fine
gem, jewel,
precious stone,
semiprecious stone, or
simply gem) is a
piece of
mineral crystal which, when cut or polished...
-
original on 19 July 2015.
Retrieved 2
January 2016. "Peberholm – an
artificial gem of nature" "Nya
arter hittar till Pepparholm" (in Swedish). 14 June...
-
jewelry gems and is very durable.
Other varieties of
gem-quality
corundum are
called sapphires. Ruby is one of the
traditional cardinal gems, alongside...
-
academically trained gemologists and are
qualified to
identify and
evaluate gems.
Rudimentary education in
gemology for
jewellers and
gemologists began in...
- Vol. 1. Princeton, New Jersey: Van Nostrand. p. 316. "The
Manufacture of
Gem Stones".
Scientific American. New York: Munn & Company: 49. 25 July 1874...
-
florentined white gold
triangle with a
stone of
brilliant white fabulite — an
artificial gem "developed by the
laser industry and used in
space mechanisms for its...
-
Gem Twist (June 12, 1979 –
November 18, 2006) was a 16.3 hands (67 inches, 170 cm)
world champion American Thoroughbred show
jumping horse registered...
- diamonds, but in 1904 he
identified the
crystals as
silicon carbide.
Artificial silicon carbide had been
synthesized in the lab by
Edward G.
Acheson in...
-
Shelby Gem Factory was the
production facility of ICT Incorporated, a
company in Shelby, Michigan,
United States, that
manufactured artificial gemstones...
-
remove artificial colours".
Talking Retail. 7 July 2007.
Archived from the
original on 3
February 2013. "Confirmed sighting: Asda
Smart Price Midget Gems"....