C. 1950 Vintage 7.00 Carat Amethyst and Cultured Seed Pearl Floral Ring in 14kt Tri-Colored Gold. Size 5

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.

TRI-COLORED GOLD: Gold is a precious metal which is often alloyed with other metals to increase strength and create different colors. Sometimes called "tri-tone," a tri-colored gold piece includes three colors of gold: yellow, rose, white, or gunmetal-finished gold. The purity of the metal is indicated by a unit called a "karat," with 24kt having the highest percentage of natural gold.

FILIGREE: a term for gold or silver wire that has been twisted into patterns and soldered in place. Modern stamping techniques can replicate the decorative appeal of this ancient artform.

AMETHYST: A natural variety of quartz, amethyst ranges in color from deep purple to pale lavender, and even to warm greens. Amethyst has been used during meditation to provide a sense of spiritual balance. Amethyst is the birthstone of February.

OVAL: An elliptical shape that resembles an egg.

CULTURED PEARLS: Likened to the moon, pearls have been valued for their luminous glow and natural beauty for thousands of years. Today, high-quality cultured freshwater pearls make pearl jewelry affordable to all. Pearl is the traditional birthstone for the month of June.