Crystal Work: The Magic of Precious Stones
It is interesting that all the crystals classified as ‘precious’ are also the hardest stones. On the Mohs Scale of hardness diamond has a hardness of 10, ruby and sapphire score 9 and emerald scores 8. Pearl, which has only been classified as a precious stone in recent times, is not a crystal and not … Read moreCrystal Work: The Magic of Precious Stones