Australia is opal country and today is the most important supplier of fine opals. Almost 95 per cent of all Opals come from Australian mines. The remaining five per cent are mined in Mexico, and in Brazil’s north, also in the US states of Idaho and Nevada, but recently the stones have also been found in Ethiopia and in the West African country of Mali. Black Opal or Opal with a dark gray body shows the most brilliant play of colors imaginable.
Red Diamonds. Price: USD $2-2.5 Million/Carat
Very few red diamonds have ever been found, and very few gem dealers have seen one in person. The gem is described as a purplish red, so it is not a pure red, crimson, vermilion, or scarlet. Nevertheless for its size it is one of the most expensive diamonds ever. The Argyle Mine in Australia produces a small number of red diamonds. The largest and finest of these are auctioned every year or two, and sell for millions of dollars.
