This is an old linear hallmarked Los Castillo masterpiece. It fits up to a 7.25in wrist at least and any size smaller than that. The color of the blown glass with bubbles inside the "bubble" is aqua green and in my opinion is the true color of the ocean. No defects at all to this piece and it is a heavy 83gms. It is 2 in. wide in the front and tapers to one inch in the back. There is 2.75in. across on the inside and it is built with an oval shape. An excellent example that is a featured book piece as well. Gorgeous work of art and simply THE BEST!