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
Blue Is the Colour B-sides of the singles taken from their albums. from the "Rotterdam" CD5 from the "Don't Marry Her" CD1 from the "Don't Marry Her" CD2 Note: The French version of "Dream a Little Dream of Me" ("Les Yeux Ouverts") was recorded for the movie "French Kiss". It was re-used in the film "The Devil Wears Prada". from the "Blackbird on the Wire" CD1 from the "Blackbird on the Wire" CD2 from the "Liars’ Bar" CD1 from the "Liar's Bar" CD2 Blue Is the Colour Blue Is the Colour is the fifth studio album from English band The Beautiful South, released in