I used a gorgeous piece of Turquoise (1 3/8" x almost 1" at widest) in this adjustable ring. I love this piece of Turquoise! It has beautiful bright blue color with white ...so pretty! Bezel set in fine silver .999 to a hammered sterling silver band. Band is 14mm wide and size is 8, but can go up 1-2 sizes. With a wider band like this figure about 1 size up than you would wear with a thinner band. To go down in size just let me know. Thanks!