The Custom Opal Gradient Glowstone Ring  unique gradient design that features up to seven different opal colors. Each color section contains a different type of opal and glowstone color, which results in a stunning glowing effect in the dark. This design is inlaid by hand into a hexagon-shaped Titanium inlay blank. The opal is crushed up finely to fit within all the hexagon shapes to allow for as much opal as possible in each hex.