“Ephémères”: Rings in white gold, brilliant-cut diamonds, cabochon moonstone and plique-à-jour enamelling - Brooches in white gold, brilliants, plique-à-jour enamelling, violet sapphire or Paraiba tourmaline, - Convertible necklace: opal and moonstone beads, removable central piece in white gold paved with diamonds, moonstone and plique-à-jour enamelling by Mathon.