Four pieces of recycled bottle glass suspend from a 18 inch sterling silver snake chain for a simple and striking effect. Glass pieces are approximately 1 inch in diameter. Patented. • Colors are: aqua from a sake bottle, antique clear from a Coca-Cola bottle, periwinkle from a sake bottle, and clear from a beer bottle All Smartglass Jewelry purchases come beautifully boxed with an artist card, handcrafted and recycled story, and bottle key card included.