Gemstone few as one in a million atoms. These so-called impurities are sufficient to absorb certain colors and leave the other colors unaffected. For example, beryl, which is colorless in its pure mineral form, becomes emerald with chromium impurities. If manganese is added instead of chromium, beryl becomes pink morganite. With iron, it becomes aquamarine. Some gemstone treatments make use of the fact that these impurities can be "manipulated", thus changing the color of the gem. Gemstones are often treated to enhance the color or clarity of the stone. Depending on the type and extent of treatment, they can affect 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