This ring contains a natural Australian Opal gemstone measuring 3x4mm, and 4x6. The colorful opal stone is a naturally formed White Fire Opal that is dyed black. This ring is 925 sterling silver and platinum plated, also available in gold or rose gold plating. This item includes a gift box and a certificate of authenticity with purchase. This item is made to order, please allow 10-15 days for processing and delivery.