Cameos for a necklace Materials: shell. Date and origin: ca 1820-40. Size of the cameos: 1 by 3/4 inch the biggest, 3/4 by 5/8 the smallest Condition: flawless.   This is a very rare lot of 11 magnificent cameos, likely made for a necklace. Most of them are three-dimensional. Higly desirable collectors piece.