Found at just one narrow location in the shadow of Mount Kilimanjaro, Tanzanite is the only new precious stone which went discovered in the past millennium. Named by Tiffany & Co after it was found in 1967 by Masai tribesman in the Merelani Hills in Tanzania, this beautiful stone shows different tones of blue when viewed from different angles. Unless a new location is discovered, Tanzanite will run out by 2025.