Diamond It is the most popular and the most expensive gemstone that is derived from coal. It has an extremely high-energy vibration and as such it absorbs all energies and sharpens the strongest. It is considered to strengthen generosity, optimism and courage. In the Bible it is identified with the fourth tribe of Asher. Diamonds are mined in South Africa, Zaire, Brazil and the USA.
Iolite is a transparent mineral and is encountered in all shades of blue or violet blue. It has a hardness of 7.5 and crystallizes in the orthorombic crystallographic system. It is named after the ancient Greek word “ion” meaning violet. Iolite is mined in Sri Lanka, Myanmar, Australia, Namibia, Tanzania and Madagascar.