C. 1940 Vintage 11.50 ct. t.w. Moonstone and 1.10 ct. t.w. Sapphire Flower Bouquet Pin in 14kt Yellow Gold

14KT: Karat (abbreviated kt or K) is a unit that indicates the purity of gold in the metal. 14kt is 58.33% gold. In the United States, 14K 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.

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

MOONSTONE: named for the white reflection that mimics the reflection of moonshine. Typically polished and featuring a cabochon cut, moonstone's light-catching shimmer is perfect for fine jewelry. In Europe, moonstone is the birthstone for June.

OVAL: An elliptical shape that resembles an egg.

CABOCHON: A style of cutting gemstones to achieve a smooth, domed surface with an absence of facets.

SAPPHIRE: A favorite gemstone of ancient priests and royalty, the sapphire radiates sophistication and grace. This prized gem comes in every hue of blue, plus the more unexpected shades of pink, yellow, green and orange, and is September's birthstone.