Eastern Roman Empire (Byzantine) Authentic Genuine Ancient (12-13th Century AD) Bronze Tetarteron Coin with Real 925 Solid Sterling Silver Bezel and Chain. The pendant’s approximate diameter is 18.5 mm. The chain's length is 20". Please take a look at the photos – the actual item pictured. Shipping fees: $2.99 (the 50 states), $8.99 (Canada), $10.99 (Worldwide). Thank you for looking.