This green tourmaline and enamel ring by Amr Shaker, Geneva, dates from the early 21st century. The broad, slightly tapering band centers a bezel-set sugarloaf green tourmaline flanked by a line of gold rock studs on a rust and green patterned basse-taille enamel ground. Impeccably made, this bold and colorful design pairs with chunky gold jewels for a casual and chic modern look.