HOW TO PUT A PROTECTIVE CAP ON A CAB

To protect a specimen cab, often a cap is needed. In my case, I had a slab with the because of the color of the background and the pattern. This background had a more silicified consistency than most sandstones. It had no graininess like most sandstone, so I'm inclined to compare it to a jasper. The pattern was typical of a dendrite.

- BOB RUSH

I'm used to working with dendrites which are often two-dimensional, so I anticipated this one to be rather thin, forcing me to work it flat, but it had depth. The slab it came from was almost a half-inch thick, so I sliced it in half and the dendritic pattern carried through to the back. It was similar, but not as spectacular as the front.

MAKING A DOUBLET