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 Renewable Energy Association. It also got Innovation Award for Energy of the Engineer Technology and Innovation Awards 2009 and Scottish Green Awards for the Best Green Industry SME. In 2010 it was listed on GlobalCleantech 100 list. On 28 October 2015, BBC News reported that Aquamarine Power had called in administrators. No buyer was found and less than a month later, on 20 November, the company ceased to trade with the loss of fourteen jobs. Aquamarine Power Aquamarine Power was a wave energy company, which was founded in 2005 to commercialise a wave energy device concept known as the Oyster