Noun
A grayish or whitish mineral occurring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote.
Source: Webster's dictionaryMr Njau informed the Court that on March 15th this year, in the same offices situated at National Social Security Fund (NSSF), Mr Muller failed to store the 45.3 kilograms and 19.3 carats of the blue and violet variety of the mineral zoisite in a safe. Source: Internet
Tanzanite, the blue and violet variety of the mineral zoisite, has only ever been found in northern Tanzania. Source: Internet