Gary Freeman's fascination with rocks has cost him about $1 million since July 2003. He's spent that hard-earned money on a side project, digging for gems in the oldest tourmaline mine in the country ...

The Blue Lagoon Paraiba tourmaline on a necklace by Adler being offered by Sotheby's Geneva. A rare 93.94-carat Paraiba tourmaline from Mozambique, named the “Blue Lagoon,” is a highlight of Sotheby’s ...