The product is a Robert Lee Morris RLM Studio concave ring made of sterling silver in size 10. This fine jewelry piece does not feature a main stone, making it a sleek and simple addition to any jewelry collection. With its unique design and high-quality craftsmanship, this ring is sure to make a statement for those who appreciate minimalist and stylish accessories. Original purchase 2009 by family member and was told at the time that the product number was JM3000.