This simple but elegant design in Sterling Silver features 5 mm fresh water button pearls , 4mm square natural turquoise and genuine white sea glass that is hand picked up from the eastern shores of the United States. These elements are all natural and may very slightly from those pictured. hand crafted by pur Artisans, all is set into 3.7 grams of sterling silver , finished off with sterling silver ear wires . Nickel Free