Ten of the best jewels

At the Guardian, John Mullan named ten of the best jewels in fiction.One novel on the list:The Eustace Diamonds, by Anthony TrollopeThe priceless jewels of the title come into the possession of the adventuress Lizzie Greystock after the death of her nasty husband, Sir Florian. They do not properly belong to her, but she is determined to keep them. Thieves eventually succeed in taking them, and in