Titanite is also known as Sphene
Physical Properties
Titanite (Sphene) has a fantastic strong fire, a dispersion higher than that of diamond. It is a soft and brittle stone so seldom used in jewellery. It comes in greens and browns and there is also a rare colour change variety. It is a strongly pleochroic stone, with a very high birefringence and an adamantine lustre.Chemical composition: Calcium titanium silicate
Crystal structure: Monoclinic
Hardness: 5