An Update on Imperial Topaz from the Capao Mine, Minas Gerais, Brazil
The Capao mine is one of the oldest and most productive fully mechanised Imperial topaz mines in the historic Ouro Preto area of Minas Gerais, Brazil.
The Rutilated Topaz Misnomer
An examination of so-called "rutilated topaz."
Pink Topaz from Pakistan
Pakistan has begun to produce fine gem-quality pink topaz.
Altering the Colour of Topaz
A review of the various techniques in use today to change colourless topaz to a variety of hues.