Blue Chalcedony and 4.20 ct. t.w. Swiss Blue Topaz Drop Earrings in Sterling Silver

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."

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

CHALCEDONY: a family of minerals that is often milky gray or bluish in color. Chalcedony includes a number of stones including onyx (black), carnelian (waxy red), agate (wide ranging palette) and bloodstone (brownish red.)

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

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

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.

MARQUISE: An elliptical shape that comes to a point at the top and bottom. Sometimes referred to as a "navette."