The chain in this Agnès b. ceramic ring and necklace gift set is unopened and I believe it to be 23 inches (approximately 58.5 cm) long. The set is designed so that the three ceramic rings—each featuring iconic Paris-themed designs—can be worn individually or strung onto the 925 silver chain to be worn as pendants. Black ring approx 3 x 15 mm, red is 3 x 12 mm and the white is 3 x 8 mm. Black ring has a gold Eiffel Tower and letters ‘AB’, the red has the word ‘Paris’ and stars in gold and the white has ‘very Agnes b !!’ in gold lettering. Box is approx 9.5 x 9.5 x 9.5 cm with ribbon.