Tiffany & Co. Tiffany 1837 Interlocking Circles Pendant. Silver circles, on a 16" silver chain. Inscribed with "T & Co. 1837". Necklace was always kept in the original packaging between wears and was never worn for extended periods of time, or in the water. The necklace is made of Sterling Silver. To keep clean over time, use provided bag or other jewelry cloth to remove any tarnish.