Blue topaz, which is often found in jewelry ... light and human color perception also play crucial roles. When light enters a ...

A flawless blue topaz gemstone - the largest of its kind - will be displayed in the Museum's Minerals gallery from 19 October. The Ostro stone is the largest cut topaz to go on show at the Museum.

Read full article: Snakes and cash stolen from Northwest Side pet store, video shows Teacher Appreciation Month. MASON, Texas – The state gemstone of Texas is blue topaz, and you can hunt for it ...

Mason County is the only spot you can find clear or blue topaz." Gemstone hunting is pure luck, but it is finders keepers. It truly is a gamble. "You can't find it if you don't hunt for it," Hahn ...

THE WORLD'S biggest chunk of cut blue topaz gemstone has been unveiled 30 years after it was discovered by a swashbuckling British adventurer likened to Indiana Jones. Max Ostro escaped death at ...

LONDON (Reuters) - A flawless blue topaz gemstone, said to be the largest of its kind, is set to go on display at London's Natural History Museum. The Ostro stone weighs around 2 kg (4.4 lb) and will ...

LONDON (Reuters) - A flawless blue topaz gemstone, said to be the largest of its kind, is set to go on display at London's Natural History Museum. The Ostro stone weighs around 2 kg (4.4 lb ...