Perfectcharm is away on holiday until 18th September. Our workshops are open so any charms ordered will be worked on whilst we are away so we can post out on returning on the 18th. Sorry for any inconvenience. This little charm is a replica of Newtons Bridge, also known as Mathematical Bridge, designed by William Etheridge which is found in Queen's college Cambridge. The charm measures 16mm across. Available in sterling silver, either with or without a clip on clasp. All our silver charms can be ordered with 'Carrier Bead Charms' These are bead like attachments which allow the charm to be threaded onto a Pandora or Troll bracelet. These beads will be attached and soldered to your charm. Our charms can be ordered with a 16" - 18" silver necklace attached Free returns on silver charms