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.

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."

AMAZONITE: Sometimes confused with jade, amazonite is most often cut into cabochons or beads and polished for a radiant shine. This pale, blue-green gemstone sometimes contains gray or white markings which add to the stone's natural allure.

PEAR: Similar to the outline of a pear fruit, this is a round shape that comes to a point on one side.

ROSE-CUT: An antique gemstone cut dating back to the 1500s, with a flat back and a faceted top.