Red Aventurine and Swarovski Crystals - Red Aventurine accented with smoke topaz, liked smoke topaz, & light colorado topaz Swarovski crystals lay upon a delicate .925 sterling silver rope chain. This necklace has a .925 steling silver lobster clasp with a 1" .925 sterling silver extender accented with a light smoke Swarovski crystal. Approx. 16 1/2"