Trinity Candle Factory Premium Scented Kumquat - Effusion Lamp Oil - 8 oz. Catalytic Lamp / Effusion Oil is for your Lampe Berger, Redolere, La Tee Da, or Stone Wick Lamps. Truly a great product. Trinity Candle Factory's catalytic lamp oil is great for any stone wick lamp assembly. This Kumquat candle is just different. The smell of the kumquat is a nice sweet citrus and very fruity. Very unique and very strong. 100% Satisfaction Guarantee.