What is a Paraiba Tourmaline?

Did you know that Sapphire is found in every color, not just blue, and Garnets come in every color except for blue? Can you name a gemstone that changes color depending on the type of light shining on it? Which gemstone is famous for its deposits in Andamooka? Whose engagement ring sold for $2.6million at auction in 1996? For these and other helpful, fascinating facts on gemstones and jewelry see the International Colored Gemstone Association's website ICGA. Lots of information, advice, news and photos for your education and enjoyment.