Opal Triplet cutting service

Hi all,

I have recently been working up in Ethiopia and have found a good
source for Ethiopian Opals. Some of the material is porous or cracked
and is best suited for making triplets. I am looking for either a
supplier of Quartz caps or even better a commercial cutting service
who can produce the triplets if I supply the rough material.

Can anybody help?
Shaun Pearton
South Africa