This brooch is rhodium-plated and adorned with 68 small bohemian crystals and one large central blue bohemian crystal. 

Inspiration

This is based on the top cross of the Imperial State Crown. The original sapphire was taken from a ring reputed to be worn by Edward the Confessor. 

Measurements

The brooch measures 2.5cm(1in) by 2.5cm(1in) and has a locking C clasp fastening.

Weight: 9g