Were these lamps converted from oil?

Many examples from the Victorian and Edwardian eras started as burning oil lamps before electricians adapted them for domestic lighting. Other pieces emerged during the art deco period built specifically for electrical wiring. Conversion methods vary widely, with some retaining their original reservoir fittings while others received entirely new internal wiring channels during the twentieth century.

How do I date an onyx lamp?

Dating relies on combining the silhouette of the stone turning with the stylistic clues of the metal mounts. Victorian and Edwardian pieces often favour classical columns or ormolu enrichment, whereas 1930s examples lean towards streamlined geometric forms. Material choices also help narrow the period, as gilt bronze and champlevé point firmly to French production around nineteen hundred.

What styles are most common?

French neoclassical and Victorian revivals appear frequently across surviving examples. Makers heavily drew upon Louis XVI designs, incorporating Corinthian capitals, cherubs, and dolphin motifs into the brass and stone structures. Later pieces from the nineteen twenties introduce cleaner art deco lines while retaining the contrasting textures of polished stone and gilded metal.

How do I care for antique onyx?

Stone shafts and metal mounts require gentle dusting with a dry, soft cloth. Moisture and chemical cleaners must stay away from both the polished onyx and the gilded bronze surfaces to prevent damage. Checking the internal threaded rods periodically ensures the stone and metal components remain securely aligned without excessive tightening.