18ct white and yellow gold small sapphire diamond bee brooch Diamond butterfly brooch, 11ct and flower spray brooch 14ct Platinum diamond sapphire cat brooch Small peacock feather brooch with pear shape old cut diamond – Platinum and 18ct yellow gold diamond sapphire flower brooch (GRS certified) 18ct white gold diamond ruby onyx flower bow brooch Classic brooch is making a comeback this season, says the designer.