From Cabochon to Specimen: An Unexpected Turn with Indonesian Copper Chrysocolla

I started this piece of Indonesian Copper Chrysocolla (ICC) with a simple goal: make a live-edge cabochon. The colors were promising, and the natural crystal-lined edge was too interesting to grind away. I wanted to polish the broad face while preserving that edge.

The original plan

At first, the surface had quite a bit of white and tan material. I hoped that careful shaping would reveal more of the vivid blue-green underneath. The side of the stone already showed a beautiful band of color, along with a natural cavity lined with tiny crystals.

What happened at 220 grit

While working the face at 220 grit, small pits began appearing. Rather than simply removing surface color, I seemed to be grinding through thin material over interior pockets. Continuing to chase the white and tan would risk opening more cavities and weakening the remaining roof.

That was the turning point. I stopped trying to make the surface into a conventional cabochon. The stone was revealing a structure that made more sense to preserve than remove.

A different finish

I changed plans and finished it as a partially polished, live-edge specimen. The white branching patterns and golden-brown areas remained. So did the blue-green pockets and the little crystal-lined cavity. Instead of a smooth, uniform dome, the result highlights both the polished areas and the natural formations.

The lapidary lesson

Not every promising slab becomes the cabochon you imagined. Sometimes working the stone reveals hidden structures that change the design. Knowing when to stop removing material can be just as important as knowing how to shape and polish it.

This one didn't become the cab I planned. But it became a specimen I enjoy looking at from every angle—and I learned something from the process.