This gorgeous necklace is a brand new 16 inch necklace with a 2 inch extension chain and a lobster clasp closure. This is a genuine .925 sterling silver necklace with genuine faceted aqua chalcedony, genuine blue chalcedony, and genuine turquoise stones. The stones are 8.5mm x 11.5mm oval, 9.5mm soft square, 10mm x 12mm pear, and 13mm x 17mm sideways oval.