They were also asked to identify potential methods for industry to demonstrate progress in achieving the â2020 Ambitionâ. 1  CLOSING THE PERFORMANCE GAP: THE 2020 AMBITION. 2  From 2020, be able to demonstrate that at least 90% of all new homes meet or perform better than the designed energy / carbon performance.
The word Prasiolite comes from the Greek words meaning Leek Stone. It is also known as Green Quartz or (incorrectly) called lime citrine. Less common names for the mineral are Vermarine and Amagreen.
Amethyst is a well known mineral and gemstone. It is the purple variety of the mineral Quartz, and its most valuable and prized variety.Its name derives from the Greek amethystos, which means not drunken, as Amethyst in antiquity was thought to ward off drunkenness.hen used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine. Some varieties may also change to a light green color, which is given the trade name Prasiolite, or Green Amethyst, as it is more commonly known in the gem trade.