Emerald Emerald Emerald is a gemstone and a variety of the mineral beryl (BeAl(SiO)) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate. The word "emerald" is derived (via and ), from Vulgar Latin: "esmaralda"/"esmaraldus", a variant of Latin "smaragdus", which originated in (smaragdos; "green gem"). Emeralds, like all colored gemstones, are graded using four basic parameters–the four "C"s of connoisseurship: "color", "clarity," "cut" and "carat weight". Normally, in the
Aquamarine Power 2009 Aquamarine Power announced an investment of £11m in the business. The principal investor during this investment round was ABB Group who invested £8m. The other investors during the round included Scottish and Southern Energy who invested £2.7m with other historical investors making up the balance of £300k. The investors in the business include: ABB, SSE, Sigma Capital Group, Scottish Enterprise and others. Aquamarine Power won several awards. In 2008 it was named Emerging Technology Promoter of the Year by Ernst & Young Euromoney Global Renewable Energy Awards. In 2009, it was named Innovator of the Year by the British