1-1.75mm Marcasite and .30 ct. t.w. Swiss Blue Topaz Star Drop Earrings in Sterling Silver and 14kt Yellow 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."

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.

POST/CLUTCH: An earring with a post insert and a slide-on clutch backing to hold it in place.

TOPAZ: Available in a stunning selection of shades, the topaz's sky blue hue is one of the most popular colors for jewelry designs. Once thought to offer protection, today topaz is favored for its durability and affordability. Yellow topaz is the birthstone for November while blue topaz is for December.

MARCASITE: Made popular during the Victorian Era, marcasite (also known as iron pyrite) shimmers with a metallic luster and diamond-like sparkle. Often used in Art Deco and Art Nouveau designs, marcasite lends jewelry a vintage vibe.