7 is the lucky number - 7 pieces of recycled bottle glass make this on-trend necklace a hit! 22 inches adjustable shorter, finished with silveråÊaccents. Patented. • Pictured in sage from a wine bottle and antique clear from a Coca-Cola bottle All Smartglass Jewelry purchases come beautifully boxed with an artist card, handcrafted and recycled story, and bottle key card included.