We have a corner sink on our peninsula. Our peninsula has 2 pendants; the corner sink has one recessed light above it. The pendants are controlled by one switch, the recessed light another. The light over the sink is independent of all other lights, recessed or not. Note that the sink light is also quite close to the crown molding. Personally, I think it looks fine. The reasoning behind this setup (yes, it was deliberate), is that when I'm at the sink I only need to have the light above it on, not the pendants, which aren't over it, nor the other recessed lights, which would be behind me and cast a shadow over the sink. I don't know how far apart the lights are (I'm not at home right now to measure), but I do know that the lights work the way they were designed to. I'm happy with them.

Suggest you go to a lighting store, one that sells only lighting, not a big box store, and ask if they recognize it. The people who work in those places are amazing and can likely tell you who makes it. And BTW, I have found that most lighting stores will match any online price you find and you also get their great service for the same $$$.

Looking for source!

Not sure, but if it's from Amber Interiors get ready to open up your pocket book. Those fixtures look hand blown. You may be able to find a hand-blown fixture from Etsy.com, similar and for a quarter of the price. I've found some amazing pieces from there.