C. 1930 Vintage Pink Shell Cameo Pin/Pendant in 10kt Yellow Gold

10KT: Karat (abbreviated kt or K) is a unit that indicates the purity of gold in the metal. 10kt is 41.67% gold.

YELLOW GOLD: Gold is a precious metal with a natural yellow color. It is quite soft and often alloyed with other metals to increase its strength. The purity of the metal is indicated by a unit called a "karat," with 24kt having the highest percentage of natural gold.

REVOLVER: A safety that conceals the point of a pin and keeps it in place with a revolving lever mechanism.

HINGED: A bale with a hinge. The hinge allows the pendant to be placed on and taken off a chain easily and without sliding. Ideal for putting pendants on chains that have large clasps.

SHELL: A treasured gift of the sea, shell has been used for ornamentation since recorded time. Shell makes a classic choice for cameo designs and is often carved in relief to display a ladylike motif, presented in a frame of precious metal.

OVAL: An elliptical shape that resembles an egg.

CARVED: When a gemstone is cut so that the outline or surface takes the form or likeness of a specific image or pattern.