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
Henry Garnet had reached "a stage of desperation". The two met again in July at Fremland in [[Essex]]. Garnet told Catesby that he "wished him to look what he did if he intended anything. That he must first look to the lawfulness of the act itself, and then he must not have so little regard of Innocents that he spare not friends and necessary persons for the Commonwealth." When Catesby offered to tell the priest more, Garnet declined: "I told him what charge we all had of quietness and to procure the like in others." Garnet also spoke with [[William Parker, 4th