Diamond 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.
Sapphireis an aluminum oxide gemstone. Its blue color is due to the presence of iron and titanium. It is considered to be the gemstone of spiritual clarity, abstract thinking and cosmic wisdom. It helps get rid of any negativity of the mind and promotes communication. In the Bible it is identified with the Fifth Tribe of Naphtali. In the Apocalypse of John, it is referred to as the second stone of the new Jerusalem. It is mined in Australia, Myanmar, South Africa and Russia.