Gemstone beryl. Gemstone pricing and value are governed by factors and characteristics on the quality of the stone. These characteristics include clarity, rarity, freedom of defects, beauty of the stone, as well as the demand for them. There are different pricing influencers for both colored gemstones, and for diamonds. The pricing on colored stones is determined by market supply-and-demand, but diamonds are more intricate. Diamond value can change based on location, time, and on the evaluations of diamond vendors. There are a number of laboratories which grade and provide reports on gemstones. Each laboratory has its own methodology to evaluate gemstones.
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