News Archive

Sphene

Sphene is calcium titanium silicate (CaTiSiO5). The mineral was first discovered in Hauzenberg in the Bavarian region of Germany in 1795. It was named titanite for its titanium content. The synonym, sphene, was introduced in…

Splendour & Science of Pearls

Edited by Dona Mary Dirlam and Robert Weldon A GIA Publication, 2013, 1st Edition, Hardcover, 149 pages, illus. $89.00 Available from GIA www.gia.edu Throughout human history few gem materials have been as coveted as the pearl…

Diamond Market – July/August 2014

A slow summer and moderate demand for diamonds. Some fancies selling well but pear and princess sales are flat. GIA grading reports still greatest demand but report times are weeks to months out due to backlog. IDMA warns…

The Gems of East Africa

“If I know a song of Africa, of the giraffe and the African new moon lying on her back, of the plows in the fields and the sweaty faces of the coffee pickers, does Africa…