Sacred Oak blue sapphire ringrecycled sterling silver polished finish frosted finish D shape band open back setting round cut blue sapphire pull on style All products are handcrafted. This piece comes complete with a protective dust bag. Hallmarked in the United Kingdom at the London Assay Office. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non abrasive products specially meant for cleaning jewellery.