Help please! What style of cutter?

I am not sure what cutter this is but you can achieve a similar look with this onlay from marvelous molds. http://marvelousmolds.com/onlays/moroccan-lattice

I thought it was the Marvelous mold mat at first, but on closer inspection, it’s a little different. I knew I had this cutter though… I looked and looked and I believe one of these will work for you:

http://www.sugarartstudio.com/quatrefoil_cutter.php

Ah thanks SO much! That’s it, just need to try and source one in UK now 😊 x