In HarmonyHere we have a lovely Gary Green or Larsonite inverted teardrop cabochon in a fine serrated bezel setting enhanced with a sterling silver leaf group component.18" x 2mm sterling silver Italian diamond cut rope chainGary Green Larsonite, also referred to as "petrified bog wood" is a form of petrified wood from a location near McDermitt Oregon, on the Nevada/Oregon border. ... Petrified wood encourages people to respect and look after their environment,finding ways to live simply, in harmony with the Spirit of the planet.