Thursday, February 26, 2009
Fancy color Sapphire
Purple sapphires are lower in price than blue ones. These stones contain the trace element vanadium and come in a variety of shades. Yellow and green sapphires have traces of iron that gives them their color. Pink sapphires have a trace of the element chromium and the deeper the color pink the higher their monetary value as long as the color is going toward the red of rubies. Sapphires also occur in shades of orange and brown, and colorless sapphires are sometimes used as diamond substitutes in jewelry. Salmon-colored padparadscha (see below) sapphires often fetch higher prices than many of even the finest blue sapphires. Recently, sapphires of this color have appeared on the market as a result of a new treatment method called "lattice diffusion"'