David Andersen, one of the premier jewelry designers in Norway, produced this lovely pin and earring demi parure. The pin is a single leaf in a beautiful, mellow yellow color. The earrings are clips. The technique is termed guilloche' enamel. The design is engine turned into the metal and the enamel is applied over it. Metal is sterling silver. This jewelry has not been polished in a very long time so it does have old patina. I like it that way but if you prefer shiny a little polish will give you that look. Pin is 2 3/4" end to end and the earrings measure 1 1/8". All pieces are signed and in excellent condition.