Yum. These old matte glazed tiles are all the better in hand, thick and heavy and those matte glazed colors are just gorgeous. I am not sure the maker but believe they date to 1920s-40s, feeling not at all a far cry from solid color Grueby examples. I wish I had a hundred of them to arrange and re-arrange forever like parquetry blocks.
Diamond shapes: 6 7/8" across corner to corner. Triangle shape: 3 7/8" each side. Sold as set of four, as found. All in very good condition, no chips, cracks or other issues. Felt pads at the corners of three of them, easily removed with just a little effort.