Necklaces / Pendants by Helen Rankin Simple and crisp the Flat Geom pendant consists of two overlapping geometric shapes.The Geom pendant shape measures 32x30mm, the metal is 1mm thick.The pendant is 18ct Gold Plated, and hangs on an 18" oxidised sterling silver snake chain, with a lobster clasp. Features Primary Material : 18ct gold vermeil Other Materials : silver Length (inches) : 18 One of a Kind : No Metal : 18ct gold vermeil Hallmarked : Yes Cleaning Instructions We recommend storing your jewellery in a zip lock bag as exposure to the air and environment can cause your jewellery to tarnish over time. Zip lock bags are a cheap way to keep your jewellery looking newer for longer. Acid free tissue is also an excellent way to store your jewellery.To brighten up your silver pieces we recommend using a silver dip solution. Always ensure you clean your item after silver dipping, with warm soapy water and a soft toothbrush. If your piece is partially oxidised we advise cleaning the bright silver areas only by rubbing with a silver polishing cloth.For gold plated items, you can use warm soapy water and a soft cloth to remove any dirt however it will not bring back any shine of the original plating. We would recommend a re-plating of your item if you want to give it its sparkle back.