C. 1980 Vintage 18.75 ct. t.w. Diamond Ribbon Pin in Platinum

PLATINUM: A rare precious metal cherished for its longevity and strength. Platinum is naturally white, durable, dense, and resilient to discoloration. Most platinum in jewelry is at least 95% pure since it does not require alloys or plating.

REVOLVER: A safety that conceals the point of a pin and keeps it in place with a revolving lever mechanism.

Diamond: The hardest and most brilliant of all gemstones, a diamond can make the heart race with its pure and fiery spark. An ancient symbol of love, a diamond is the preferred gemstone for tokens of affection, such as rings, earrings, necklaces and bracelets. Diamond is the birthstone for April.

BAGUETTE: An elongated rectangle step-cut. Typically used for smaller diamonds, but can be found in other gemstone as well.

Clarity VS1: Very slightly included. Inclusions are observed with effort under 10x magnification, but can be characterized as minor.

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

BRILLIANT: A gemstone cut to enhance brilliance without sacrificing much carat weight. Typically has 58 facets.

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