Stabilized Turquoise and Chalcedony Necklace. Get carried away to the tropical seas. This 16" + 2" extension sterling silver necklace is set with faceted aqua chalcedony, blue chalcedony, and stabilized turquoise stones. Stabilized turquoise is when the turquoise stone is chemically treated by adding an epoxy resin for increased hardness and enhanced color. With a permanent color and nice matrix, stabilized turquoise is a beautiful value. The stones are 8.5mm x 11.5mm oval, 9.5mm soft square, 10mm x 12mm pear, and 13mm x 17mm sideways oval. The necklace has a lobster clasp closure. .925 Sterling Silver. Free shipping. Estimated delivery: 7 days.