This is one seriously mesmerising solid Australian Opal. The colours and patterns constantly change in the light. You'll go from not a lot of colour other than grey, then with the slightest bit of movement, BAM a huge flash of electric red! Then if you keep moving and looking, you'll see light orange, yellow, green, blue, and some serious flashes of purple, on the right angle. It has layers of colours and patterns going over itself and will keep you busy for way too long!