- 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...
- The
Infinity Gems (originally
referred to as Soul
Gems and
later as
Infinity Stones) are six
fictional gems appearing in
American comic books published...
-
jewelry gems and is very durable.
Other varieties of
gem-quality
corundum are
called sapphires. Ruby is one of the
traditional cardinal gems, alongside...
-
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...
-
original on 19 July 2015.
Retrieved 2
January 2016. "Peberholm – an
artificial gem of nature" "Nya
arter hittar till Pepparholm" (in Swedish). 14 June...
-
academically trained gemologists and are
qualified to
identify and
evaluate gems.
Rudimentary education in
gemology for
jewellers and
gemologists began in...
- An
engraved gem,
frequently referred to as an intaglio, is a
small and
usually semi-precious
gemstone that has been carved, in the
Western tradition normally...
- Vol. 1. Princeton, New Jersey: Van Nostrand. p. 316. "The
Manufacture of
Gem Stones".
Scientific American. New York: Munn & Company: 49. 25 July 1874...
- 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...
-
remove artificial colours".
Talking Retail. 7 July 2007.
Archived from the
original on 3
February 2013. "Confirmed sighting: Asda
Smart Price Midget Gems"....
