I bought this jar of raw Idaho opal ore from an elderly gentleman out at the swapmeet in Prescott Valley, AZ. The ore is in water to keep it moist. It also makes the "fire" more noticeable. Only the veins of "precious opal" that run through the ore have any "fire." Some of these veins are very thin. I had never really worked with stones before this endeavor. I managed to pick the one most unforgiving stones to work for my first project and I will try and pass on some of the things I learned here. Here are some of the pieces that I first pulled from the jar and worked down to their precious opal veins. Most of these pieces wound up as pendants.