The Queen debuts Kristjan Eyjolfsson brooch at Chelsea Flower Show
The brooch, inspired by the Iris Unguicularis, was commissioned by the Royal Horticultural Society (RHS) and presented to Her Majesty on the occasion of her Diamond Jubilee in 2012. It is made from 100 per cent recycled British white gold and features over 100 ethically-sourced gemstones, including a single conflict-free yellow diamond, at its centre.