Mineral Examples of such minerals are malachite (green) and azurite (blue). In contrast, allochromatic elements in minerals are present in trace amounts as impurities. An example of such a mineral would be the ruby and sapphire varieties of the mineral corundum. The colours of pseudochromatic minerals are the result of interference of light waves. Examples include labradorite and bornite. In addition to simple body colour, minerals can have various other distinctive optical properties, such as play of colours, asterism, chatoyancy, iridescence, tarnish, and pleochroism. Several of these properties involve variability in colour. Play of colour, such as in opal, results in
This Is Colour This Is Colour This Is Colour are a progressive power groove band from Suffolk, UK. They are currently unsigned but have a previous release, "No Brainer", through Thirty Days of Night Records. This Is Colour formed in the summer of 2005, out of previous projects from the original members, Tom Cronin, Luke Truman, Keir Atkinson, Nicholas Cheshire and Elliot Bowes Shaves. They played their first show on 17 October 2005 at Zest in Ipswich, Suffolk, UK. Their now current vocalist, Dean Ceconi, bass player Jon Mcginn and drummer, Sean Griffin all attended this show. This Is Colour recorded their first