This is a lab created green emerald and cubic zircon ring in 925 sterling silver. This ring is marked S925 Sapphire ring: www.etsy.com/listing/928146348/half-eternity-sapphire-wedding-ring-blue?ga_search_query=sapphire&ref=shop_items_search_12&crt=1 I accept custom making order.Please contact me if you need this service. This ring is closed ring.If you want a matching band,you can ask me custom make it. For all the jewelries,there is a 14 days money back guarantee.You can return it in th