Opal, considered the ''queen of gems,'' can flash patterns of color representing every hue of the rainbow. Believed by ancient peoples to actually contain fire, opal has long been ascribed many mystical and healing properties. The rainbow of fire is produced by the diffraction of white light through a micro-structure of silica spheres. Each size sphere reflects light of a different wavelength. These sterling silver earrings are set with an inlay of a matrix of iridescent white opal. Handcrafted by Leon Nussbaum, our London silversmith, of pure British sterling silver, these earrings will appear to flicker and change with every movement of the wearer. 1.25'' long, wires. Click Here for tips on caring for your sterling silver jewelry.