Kunzite is a pink to lilac gemstone. The coloring is from trace amounts of manganese. Some kunzite has been heated or eradiated to enhance the color for jewelry.
Kunzite pic courtesy of Wikipedia
It was discovered in 1902 so is relatively new in the world of minerals. It gets its name from George Frederick Kunz who was the chief jeweler at Tiffany and Co at the time. He was a noted mineralogist.
Kunzite from Afghanistan courtesy of Wikipedia
Kunzite is found in Brazil, the US, Canada, Mexico, Sweden, Western Australia, Afghanistan and Pakistan. The Duchess of Glouchester wears kunzite in her tiara and has a necklace made with this mineral.