Wall Sconces

A couple of years ago we purchased some really nice wall sconces made out of onyx (looks like quartz)at a little shop in downtown Z. The whole shop was full of things made out of onyx. The last two times down we haven't been able to find the store. Does anyone know of a store that sells these? They also had onyx sinks which I hope work better than onyx shot glasses we bought that leak like crazy, but look really cool. Thanks.