Kate Middleton wore a gold necklace with a hidden meaning during her visit to Ely and Caerau Children’s Centre in Cardiff, Wales this week.The duchess' Daniella Draper necklace can apparently be personalized.Kate's reportedly features the initials of her three children.This week was incredibly busy for Duchess Kate, who embarked upon a 24-hour tour of the United Kingdom to launch a national survey on early childhood development.For her appearance at Ely and Caerau Children’s Centre in Cardiff,