New Era Gems is always proud to offer an incredible array of top quality tanzanite specimens direct from the mines! This piece has splotches of matrix that include graphite and calcite. For over 36 years the owner Steve has traveled to Tanzania to acquire these & many more incredible crystals. This is an incredible opportunity for some of the finest, top quality tanzanite crystal specimens at a very reasonable sale price. These are just some of the many crystals we have in a wide variety of sizes, colors & quality.