A hallmark is the stamped or punched symbol that's hammered into the surface of every piece of jewelry. In addition to the official hallmark, every piece of jewelry made by Wempe Jewelers is also punch-marked with Wempe's hallmark to certify its provenance. The official hallmark provides information about the fineness of the precious metal. Regulations for the use of such hallmarks are defined by law. The fineness number indicates how many parts of precious metal are contained in 1,000 parts of the alloy. For example, "750" means that 750 units of pure gold are contained in every 1,000 parts of the gold alloy. (Also see "karat.")

The heart cut imbues diamonds and colored stones with a touch of romance. As the name implies, a heart-cut stone is shaped like a heart. To accomplish this, a triangular or heart-shaped table is surrounded by numerous facets which enhance the gem's sparkle and gleam.

The "Hope Diamond" is one of the most legendary gems of all time. Formerly owned by the French royal court, it is the world's largest blue diamond and is believed to have originally weighed 112 carats. After having been re-cut several times, it presently weighs approximately 45 carats. The diamond is believed to have been stolen from a Hindu temple in India and is therefore reputed to bring misfortune to its owner. A banker named Henry Philip Hope bought it in London in 1830. The jeweler Harry Winston gave the Hope Diamond to the Smithsonian Institution in Washington, D.C. in 1958. It is on display there today.

The Hope Pearl is named after its former owner, a London banker named Henry Philip Hope. During the first half of the 19th century, H. P. Hope amassed a major collection of gemstones which included, among its other precious items, the world-famous blue Hope Diamond. The baroque Hope Pearl is cylindrically shaped, weighs approximately 454 carats, and measures roughly five centimeters in length. The majority of this pearl is white in color, although on one side the white hue transitions into a bronze-colored tone.