As colourful as a tropical fish tank, these Australian opals are one of nature's true wonders. Speckled with red, green, orange and blue, it's no surprise why our designers love to work with them. Each opal is hand selected to ensure only the best stones are used in these wonderful studs. Two natural opals, grade AA, total 0.9 ct for both earrings combined. Oval cut. Post with friction back to fasten.