This opal ring has a striking solid Boulder Opal matrix set with anti tarnish sterling silver. The opal has the unique organic patterning found in matrix opal, with green and blue rivers of opal through the tan and chocolate brown ironstone matrix. Each piece of boulder opal matrix has its own unique picture. The opal has a domed surface and measures 25mm x 15mm, the band tapers from 13mm wide beside the opal down to 5mm on the underside for comfort. The ring is a size 12.