The Natalia is a 30" opera length strand of cultured white pearls. There is no clasp.
The Clara is an 18 karat yellow gold bar link chain necklace set with stations of white pearls. The necklace measures 40" long and is shown wrapped twice.
The Jean is a 14 karat gold heart ring set with blue enamel. It was designed by Jean Schlumberger for Tiffany & Co.
The Louise is a pair of oval cut pink tourmaline stud earrings set in 14 karat white gold.