lava lamp
lava lamp is a novelty item or light fixture.
Also recorded as Lava light.
Overview
Catalogue entries state maker, model, completeness of accessories and condition. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
decorative lamp with container of bolus in clear liquid, which heats up at the bottom and rises before cooling and falling back to the bottom
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Lava lamp”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q839679: lava lamp
Consult the source