The internal structure of precious opal causes it to diffract light, resulting in play-of-color. These rough opals measure around .75 inches in length.
Depending on the conditions it formes in opal may be transparent, translucent or opaque and the background color can be almost any color of the visual spectrum. Opal is thought to increase emotional activity and awaken the sexual center in the body.
Each piece is similar, though no item at Crystal Joys is exactly the same as every item uses a unique stone that is non-fabricated. Every item at Crystal Joys is truly "one of a kind". Slight variations in color, size and bead shape exist.