The colors with "opal" in the title are opaque and highly recommended for this type of tile. The back side of each tile is a solid color with the exception of tiles created with translucent glass. We'll make translucent tiles with a white back so the translucent color will show nicely on the surface.
Please note that shipping time on orders with custom fused tiles takes about 2-3 business days longer than normal. Thank you for your patience!
Each tile measures approximately 1" x 1" and 1/4" thick.