925 sterling silver Natural diamond platinum plated on silver Queen Elizabeth II Rose of England Brooch, royal brooch,flower brooch Metal :sterling silver metal purity:92.5 metal weight:18.90 gram Stone: Natural Diamond/ CZ Zircon Stone Clarity: SI1- SI2/ AAA + Stone cut: Excellent Stone weight: 5.50 ct Stone shape shape: Round Gemstone:pink tourmaline Gemstone weight: 1.5 ctw Brooch length: 2.5 inches Brooch Breadth : 1.0 inches Brooch finish: white gold/yellow gold 5 star service available