Carolyn Pollack Sterling Silver Green Multi Gemstone Necklace, 36 Inch Genuine Malachite, Nephrite Jade, Chrysoprase, Seraphinite, Aventurine, and .925 Sterling Silver Measures approximately 36" long See Ruler View for accurate sizing. Silver may tarnish over time. Handcrafted in America with lifetime warranty on all jewelry Beads of nephrite jade, chrysoprase, seraphinite, malachite, and aventurine make a vibrant necklace.