C. 1970 Vintage Pink Shell Cameo and .50 ct. t.w. Diamond Pin/Pendant in 18kt Yellow Gold

18KT: Karat (abbreviated kt or K) is a unit that indicates the purity of gold in the metal. 18kt is 75% gold. In Europe, 18K yellow gold is most favored and used in jewelry.

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.

CABLE: One of the most popular and classic of chain styles, created from interlocking oval links unvarying in size.

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.

Diamond: The hardest and most brilliant of all gemstones, a diamond can make the heart race with its pure and fiery spark. An ancient symbol of love, a diamond is the preferred gemstone for tokens of affection, such as rings, earrings, necklaces and bracelets. Diamond is the birthstone for April.

BRILLIANT: A gemstone cut to enhance brilliance without sacrificing much carat weight. Typically has 58 facets.

Color Grade G-H: Near-colorless

CLARITY SI1-SI2: Slightly Included. Inclusions are noticeable under 10x magnification.