Tsavorite is a deep green stone discovered in 1967 by Campbell R. Bridges, a British Geologist. He was camping in the mountains in northeastern Tanzania when he came across some curious nodules of rock. After breaking them open, he discovered beautiful green crystals he later found to be of the grossular group, though these were too small to facet. (Wikipedia has picture: https://en.wikipedia.org/wiki/File:Grossular-4jg61a.jpg)
Bridges then continued to search for a viable gem-quality source of the stone in Kenya where he not only lived in a tree hut to protect himself from animals, but was successful in finding larger stones that could be faceted. (so Mom, the next time your boy builds a fort from your couch cushions, remember Campbell Bridges and tsavorite!) Since the stones were first found in Tanzania near the Tsavo preserve, Tiffany and Co president Henry Platt named the stones Tsavorite. So far the stone has only been found in Madagascar and Kenya. Tsavorite has a refractive index of 1.74 giving the stone fire that is said to be seen even while hidden by cloth. It is also rare to find the Tsavorite in larger than 2 - 3 carats with most of the stones being less than 1carat, though in rare instances larger carat stones have been found like the 325 carat beauty found in 2006.
Marcia Kertel created these chignon hair pins with bronze wire, accenting with rose quartz and red garnet beads.