C. 1980 Vintage 20mm Carved Carnelian Floral Clip-On Earrings 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.

CLIP: An earring that clips-on with a clamp backing, relying on tension and friction to hold it in place. Perfect for people who don't have pierced ears.

CARNELIAN: A brownish-red mineral, carnelian has been used for centuries to make engraved gems and signet rings, intaglios and especially seal rings, because hot wax does not adhere to it. Its name comes from the Latin word for cherry, since the lush red color of the carnelian so resembles the vivid red fruit.

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