Italian 3.50 Carat Amethyst Openwork Dome Ring in 18kt Yellow Gold. Size 8

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.

DIAMOND-CUT: A finish that incorporates highly polished cuts or facets which create a reflective sparkle similar to the appearance of diamonds.

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.