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.
Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca 3 Al 2 Si 3 O 12.are in gem-quality over several carats (1 carat = 200 mg) in weight, tsavorite has been found in larger sizes. In late 2006 a 925-carat (185.0 g) crystal was discovered. It yielded an oval mixed-cut 325 carat (65 g) stone, one of the largest, if not the largest faceted tsavorites in the world.