How do I clean brass and onyx safely?

Dust the surfaces regularly with a soft, dry cloth to prevent the accumulation of grime in the carved details of the stone and metal. Avoid using harsh chemical polishes or abrasive pads on both the brass and the onyx, as these substances will strip the original patination and etch the polished mineral surface.

Are these lamps converted from oil?

Many nineteenth-century and early twentieth-century examples began their lives as oil-burning lamps before receiving modern electrical conversions during subsequent decades. Inspect the internal wiring channels and burner assemblies to understand how the transition from oil to electricity was managed by previous owners.

How do I date an onyx lamp?

Examine the styling cues, such as Corinthian capitals, paw feet, or champleve enamel work, which align with Victorian, Edwardian, or Art Deco design periods. Check the construction methods of the brass fittings and the wiring ports, as older pieces often feature hand-threaded components and heavy cast bases.

Can I adjust the height of a floor lamp?

Certain standard lamps incorporate telescopic mechanisms or screw keys designed to alter the vertical reach of the column for different spatial requirements. Take care when operating historical adjustment mechanisms to avoid straining internal wiring or stripping worn metal threads within the brass shaft.