tugumuda on June 25th, 2008

abraded culet A chipped or scratched culet. Can be caused by contact with another diamond.
abrasion A bruise or scratch on the surface of a stone.
AGS American Gem Society. Professional organization formed in 1934 by several independent jewelers and the founder of the Gemological Institute of America (GIA). The AGS is dedicated to setting and maintaining [...]

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tugumuda on May 31st, 2008

A mining town in South Australia, situated 520km north of
Adelaide that produces precious opal and treating matrix opal. Opal was
discovered in Andamooka in 1930 in the form of floaters below what is now known
as Treloar Hill. The first opal miners of the area were Treloar and Evans, and
their first recorded production of precious opal was [...]

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tugumuda on May 31st, 2008

Diamond Glossary
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