Base Illuminator for Deck Prism Lamp Desk Decoration | An Exact Recreation of the 19th Century Prism COMPLETE THE LOOK - This matte black hexagonal shaped base is a great source of light to illuminate your deck prism. Simply place the prism atop of the base and create beautiful rays of light that are mesmerizing to look at. DISBURSEMENT OF BEAUTIFUL LIGHT - In normal usage on a ship, the prism hangs below the ceiling and disperses the light sideways; the top is flat and installed flush with the deck, becoming part of the deck. A plain flat glass would just form a single bright spot below-- not very useful general illumination-- hence the prismatic shape. WONDERFUL CONVERSATION PIECE  Hang this one-of-a-kind piece from your ceiling like a chandelier or place it on its base anywhere in your home or office. This will be sure to attract the eyes of any seaworthy person and will impress those who are not, but fascinated in the history and function of the piece. A NAUTICAL OF A TIME - For centuries, sailing ships used Deck Prisms to provide a safe source of natural sunlight to illuminate areas below decks. Now you too can discover the charm and appeal of the past with our classically styled, nautical deck prism A HISTORICAL REPLICATION - The deck prism is an exact reproduction! Created by Mystic Seaport from an original on the whaler "Charles W. Morgan", each Reproduction Deck Prism is hand-poured solid glass weighing over 2 pounds.