Clades:
Tectosilicates.
Chemical: CaB2(SiO4)2.
Crystal system: Orthorhombic.
Crystal symmetry: similar to
Topaz.
Hardness: 7 to 7.5.
Specific gravity: 3.0.
Color: colorless, sometimes pale yellow, yellowish-brown.
Region: Danbury, Connecticut, USA.
Habitat: metamorphic rocks.