1930's Sapphire & Diamond Openwork Cluster Ring torpedo and the top opens up

and the top opens up allowing easy attachment to a necklace chain or charm holder

It's flanked to either side by three old cut diamonds in stepped shoulder accents

There is a lock mechanism

I'm not entirely sure what the message is here

Very good antique condition - light wear commensurate with age

1930's Sapphire & Diamond Openwork Cluster Ring torpedo and the top opens upDATE: Art Deco, c. 1930 A simply stunning Art Deco period cluster ring, of openwork design and set with the classic combination of sapphire and diamonds. The large round head is bordered with gorgeous French cut sapphires, each one rich and vibrant in colour. A diamond daisy is set in the centre (0. 70ct total), with open worked sections and a diamond cluster surround. It features fine diamond set shoulders, and its modelled in platinum throughout.