I watched the show last night too! I love how she marked the boxes with the names of who gave her the specific item of jewelry!
She liked gifts...but who doesn't ?!?!
You should take a walk by Hatton Garden, and also Diamond Geezer (they were on Dragon's Den!) come highly recommended. Apparently their quality is very good and their prices reasonable (I am talking about custom work, not sure if they sell read made settings without purchasing a diamond)