Diamonds are made of Carbon They have a hardness of 10 on Moh’s scale, the hardest material known to man The word diamond comes from the Greek Adamas meaning invincible. Originally...
Onyx is part of the agate family (polycrystalline quartz) and has long been used in jewellery. With its coal black colour and ability to take a good polish it was often used...
Amethyst is transparent purple quartz. It is mined in Brazil, Uruguay, Bolivia & Argentina as well as Zambia, Namibia and other African countries. Purple has long been considered a royal...
