STERLING SILVER: Also known as "Standard Silver," sterling silver is silver alloyed with other metals to increase the hardness and durability. Generally, sterling is 92.5% silver and 7.5% other metals. Some sterling silver jewelry is plated with 14kt-18kt gold and referred to as "vermeil," or "gold over sterling."

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.

GOLD OVER STERLING: Sometimes referred to as "vermeil," this metal is gold-plated sterling silver. It is one of the most desirable gold-plated metals and can come in 14kt-24kt yellow, white, or rose.

POPCORN: A lightweight, tubular chain with a beaded texture created by convex links.

LOBSTER CLASP: named after the pinching style of the hook, this clasp is often shaped like a lobster's claw. Use your finger to work the lever to open the clasp.

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.

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