The Harper is an 18 karat yellow gold ring set with a marquise diamond, ruby, and sapphire.
The Jean is a 14 karat gold heart ring set with blue enamel. It was designed by Jean Schlumberger for Tiffany & Co.
The Cleo is a 14k yellow gold chain link bracelet.
The Helena is a 14k yellow gold rose shaped brooch set with a 0.10 carat ruby at the center.