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
Aquamarine Power University, Belfast, led by Professor Trevor Whittaker. The Queen's University, Belfast studies were co-funded by the Engineering and Physical Sciences Research Council and Allan Thomson, who had previously founded and led the UK’s first commercial wave energy company, Wavegen. In 2005, Allan Thomson founded Aquamarine Power to progress the commercialisation of the Oyster device. In 2007 Scottish & Southern Energy subsidiary Renewable Technology Ventures Limited invested in Aquamarine with a further investment in 2010. In February 2009, Aquamarine Power and Queen's University, Belfast signed an agreement to extend their R&D partnership to 2014. In February 2009, Aquamarine Power signed an