A local jeweler client handed me this sterling silver bracelet that was missing a stone, along with the kite shaped opal triplet. She ask me to re-cut the opal to fit into the link missing it's stone.
The photos show how I cut a paper pattern using the stone bezel as a guide to match the shape of the missing stone.
I trimmed the opal close to, but a little larger, than the size needed for the finished stone.
I super-glued a nail to the flat back. The nail is used to hold the stone while cutting the outline shape and domed top.
I use a Pixie machine to form the outline shape, cut the domed top and polish the finished gem.
The finished cabochon is shown in the last photo, ready to be returned to my jeweler client who set the stone in the bracelet link.