ISLAMABAD: Pakistan Gems and Jewellery Development Company (PGJDC) has established five full-fledged and well-equipped gem identification labs in different cities, to provide facilities of gemstone ...

Pakistan Gems and Jewellery Development Company (PGJDC) has arranged a training course on Gemstone Identification and Grading at the Gem Exchange, Namak Mandi, in Peshawar on Tuesday. This two-week ...

Spectroscopy was first used for studying minerals and gems soon after Isaac Newton attempted to separate sunlight into its component colors with the help of a prism. By the mid-1800s, researchers ...

LONDON, ENGLAND - OCTOBER 22: A rare ruby and diamond necklace and ruby earings from the 19th Century are displayed at Sotheby's in London. (Photo by Peter Macdiarmid/Getty Images) A teacher I had at ...

Synthetic gem-crystals are available since the late 1800s and their production processes were more and more refined. Later, starting in the 1950s, diamond was available via different types of ...