iron, metal, black enamel
Candle Extinguisher / Snuffer
Never use water to extinguish a candle. Water can cause the hot wax to splatter and might break a glass container.
Make sure the candle is completely out and the wick ember is no longer glowing before leaving the room. Don’t touch or move the candle until it has completely cooled.
Candle burning tips & guidelines: http://candles.org/tips-from-the-experts/