Topaz from Ouro Preto, Brazil is known as imperial topaz and is a valuable…

Topaz from Ouro Preto, Brazil is known as imperial topaz and is a valuable variety of the mineral topaz. The topaz from this region is known for its unique colors and shapes. Color: Imperial topaz can be orange-yellow, reddish-orange, pinkish-orange, or pinkish-purple Some crystals have a sherry or muscatel color The most valuable topaz is a rich pink or red color Shape: Imperial topaz crystals can have a unique shape Some crystals have a glassy and gemmy appearance History: Ouro Preto has been a major source of topaz for over 200 years The Capão do Lana mine is one of the oldest and most productive mines in the district