Beryl over , and its dimensions were long and in diameter. The largest cut aquamarine gem is the Dom Pedro aquamarine, now housed in the Smithsonian Institution's National Museum of Natural History. The ancient Romans believed that aquamarine would protect against any dangers while travelling at sea, and that it provided energy and cured laziness. Emerald is green beryl, colored by trace amounts of chromium and sometimes vanadium. Most emeralds are highly included, so their brittleness (resistance to breakage) is classified as generally poor. The modern English word "emerald" comes via Middle English "Emeraude", imported from modern French via Old French
Gemstones of Pakistan to their report, 29759 tons of quartz was produced in Mohmand agency in 2003-2004. However, the gemstone sector in the region is not developed and many resources have not been properly identified and exploited. The three mountain ranges of Gilgit-Baltistan; Himalayas, Hindukush, and Karakoram contain many minerals and gems including emerald, ruby, sapphire, aquamarine, moonstone, and amethyst. A number of other minerals are also found in the region such as peridot, tourmaline, topaz, garnet, red spinal, pargasite, diopside, sphene, apatite, azurite, rose quartz, and agate. In Swat, pale green to green coloured emeralds can be found in talc-carbonate schist. In