Danburite is a calcium boron silicate mineral with a chemical formula of CaB<sub>2</sub>(SiO<sub>4</sub>)<sub>2</sub>.
It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0.
Danburite
40 words updated Jun 20, 2026, 4:33 AM
WikiHQWikiHQ40 words updated Jun 20, 2026, 4:33 AM
Danburite is a calcium boron silicate mineral with a chemical formula of CaB<sub>2</sub>(SiO<sub>4</sub>)<sub>2</sub>.
It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0.