I Was Discovered By a Geologist Fleeing a Buffalo

THE STORY GOES that Campbell Bridges, the rugged geologist who found me, was walking in northern Tanzania in 1967, when he surprised a buffalo. The animal charged and Bridges dived into a gully to escape its wrath. When he lifted his head he noticed shards of green-tinged sunlight bouncing off crystals embedded in the dirt walls. “I had never seen a green like it. It was pure in every sense,” he would later recall. That Bridges also worked as a consultant for Tiffany & Co. didn’t hurt my elevation to Hot New Green Thing. Pedantically speaking, I am a grossular garnet, but I much prefer to answer to the name given to me by the president of Tiffany’s, a moniker inspired by the national park where Bridges stumbled across me.

Who am I?