This gem has a characteristic blue color, usually with a violet tinge. The stone was first discovered in 1967. Very limited quantities are found, almost exclusively in Tanzania, where moreover the chief deposit is nearly exhausted. Due to it's rarity the value is quite high and cherished by collectors. The newest sensation.
Mystic fire is topaz that has been color enhanced.
It shows many colors through out the same stone, red, green and blue are the most prevalent. Opal Most opal is translucent and milky, having flashing colors of red, green and blue among others. There is also a variety of solid color opal that is orange - yellow to reddish orange that is known as fire opal. The violet purple to almost pink variety of quartz is called amethyst. It is the most highly prized of the quartz family.