Overview

• She wore the vintage Tiffany & Co. piece on Wednesday for the Beating Retreat at Windsor Castle with a sapphire blue Fiona Clare dress and a matching Philip Treacy hat.
• The choice displaced the Russian sapphire cluster brooch she has typically selected for this engagement.
• The floral design in 18k yellow gold features layered leaves with four rubies surrounding a central diamond, which an expert dated to a mid-20th-century style.
• Coverage cited an estimated value of about £30,000, described as a media assessment rather than an official appraisal.
• Jeweler Maxwell Stone said the prompt appearance conveyed gratitude and respect, and separate reports noted she had acute sinusitis earlier in the week yet continued with state visit events.