This marble is really unique. Jason stuck opals down in two of the anemone trumpets, and each of the opals have a super uniform, super thin layer of air trap around them which gives the opals this super mirrored effect. This isn't what is supposed to happen when you encase opals of course, but in this case it is a happy accident because the mirrored effect that resulted is SOOO cool looking. It was hard to capture well in pictures, but when you get it in hand, you'll see what I mean!