Can anybody recommend a gem cutter to me?

I have an old sgain dubh that is missing its cairngorm stone in the pommel. I would like to fill this 1" x 1/2" gap with a piece of lapis lazuli that I brought back from Afghanistan.

I need a skilled gem cutter to cut, polish, and mount the stone for me.

I prefer somebody who does it for a living, but my kilt was made by a gifted tailor whose "day job" is Professor of Geology, so I am more than open to the idea of a gifted hobbyist taking on the task.

Thanks,
Patrick