A ruby and diamond brooch designed as an orchid, set with calibré-cut rubies and pavé-set diamonds; estimated total diamond weight: 2.50 carats; mounted in eighteen karat gold and platinum; length: 2 1/2in.

Ruby Brooches
Ruby Brooches An Art Deco platinum, diamond, emerald and carved ruby basket brooch, French, 1920s. #ArtDeco Red Rhinestone Brooch Layered Ruby Red Large Retro Diamond and Ruby Brooch An Art Deco gold, diamond, aquamarine and ruby brooch. Centring a rectangular aquamarine framed by calibré rubies, surmounted by stylised geometric foliate and swag set with brilliant-cut diamonds, suspending a triangular pendant with foliate motif set with brilliant-cut diamonds.

Red Rhinestone Brooch Layered Ruby RedLarge Retro Diamond and Ruby Brooch Classic Retro 14k Gold Diamond Ruby Brooch Pin Retro 14k Gold Platinum Diamond Ruby Brooch Clip Pendant A diamond and ruby brooch given to the duchess by her husband, Andrew Cavendish, 11th Duke of Devonshire A diamond and ruby brooch given to the duchess by her husband, Andrew Cavendish, 11th Duke of Devonshire

Refer: http://www.bonhams.com/auctions/21775/lot/175/