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's extensive merchandise included the popular line of 'Stay Rad' t-shirts and vests. This phrase inspired a whole array of rip off's and alternative uses. This Is Colour didn't invent the phrase, but they were the first to print it. 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