Oolite Marble is a sedimentary rock, composed of concentric layers which developed during the Jurassic age around 200 million years ago. Each polished stone is set into our rhodium plated sterling silver case with hand-painted, brown enamel detailing to enhance the stones unusual raw beauty. Limited edition of 30 pairs. The colour and natural formation of our gemstones differs from one another due to natural variation, making each piece truly one of a kind.