Gemstone industry in Greenland gemstone ruby. The native inhabitants continued to assist the European explorers with their ruby exploration, leading them to some half dozen locations, spread out for over a hundred miles along the southwest shores of Greenland, known as the Kitaa Coast. Ruby and pink sapphire are the red and pink varieties of the mineral corundum, an aluminum-oxide mineral Al2O3. The pink/red colour is formed in corundum by adding the element chromium to its crystal structure. Spectroscopy of rubies from the Aappaluttoq occurrence in Greenland confirm the presence of chromium as well as showing absorption in the UV region indicating high Fe
Garnet Valley, Pennsylvania the zip code "city names" are often confused with actual municipal names. As of July 1, 2009, Garnet Valley was removed from zip code 19061 and assigned to a new zip code, 19060. Although the community name is derived from the Garnet Valley School District, the district's headquarters are not within the Garnet Valley ZIP code. The district's address is in Glen Mills, Pennsylvania 19342. The community name is derived from the Garnet mines established in Bethel Township by Herman Behr & Co. of New York in 1879. The mine operated until 1912. Garnet Valley, Pennsylvania Garnet Valley is an