Knob Drop or Hourglass Prism

Knob Drop also known as an Hourglass Prism, emerging during the late 18th century and reaching peak popularity in Victorian and Edwardian lighting, knob drops feature a distinctive waist or cinched “neck” separating a small top cap from a plump, heavy faceted bulb base.

Crafted through precision lapidary cutting, the multi-faceted, teardrop-to-hourglass silhouette was engineered to maximize light collection in three dimensions, catching candlelight from surrounding tiers and scattering bright, multi-directional flashes.

These weighted, solid-glass drops were frequently suspended as terminal finials at the bottom centre of chandelier baskets, on hanging gasolier bases, or along the lower drops of elaborate parlour candelabras and mantel lusters.

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