If a chip is not too expensive, I like to break them to look inside. It helps show how they were made. Be careful to protect your head/face: take a pair of pliers in each hand, and squeeze each side (right side and left side) of the chip with one pair of pliers. Then bend the chip, often to the point of breaking the chip, to see how it was put together. I have carved chips, drove a hot nail through them, etc. On these two chips I tried to lift the seal on an inlay of the Venetian one, and I took apart the Harrah's Marina one to look at the injection thing. I did this quite a while back.

Robert