I purchased your Carrara White Marble Hexagon Mosaic Tile 2 inch Honed Italian Carrera for my shower floor. Which is absolutely gorgeous, by the way! Does this 5x12 tile match what I purchased and can I use it to clad the shower curb? Or should I use the 4"? How many pieces would I need for a 47"W x 30 3/8" D corner shower curb being built with 2x4's and 1/2" thick hardie plank? This DIY'er needs all the help she can get! Thank you so much!