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.
Marcasite is a pale bronze yellow or brass color, with dark gray-green streaks. It rates a 6 to 6.5 on the hardness scale, is opaque, and has a beautiful glittering metallic luster. It is commonly cut into small rose cuts. Twinning is common in marcasite crystals, and can produce a spearhead shaped form, which has been mistaken for Roman weapons.