It looks like one of those intricate Moroccan tilings that you see at the Alhambra - but it is a simplified version based on a 60 degree triangle which could be worked out easily on triangle graph paper. Many of the islamic tile patterns are far more complex, with many more points in the circle. I've collected loads of them on a Pinterest board here.
The fabrics I am using are mostly Oakshott scraps. I find these much easier for small piecing as the fabric is thinner than quilting cotton - and those tiny triangles around the central hexagon are - well, tiny. But any solid that fits the colour scheme will go in.
Three units are together at the moment. I would like it to get bigger but we will see.
I'm linking up with Lily's Quilts Fresh Sewing Day and also with Jessica's Monday Morning Star Count.