Long burning blue stearic Advent candles are made especially for church advent wreaths. 12' tall; 1.5' diameter.
Stearic acid, also known as stearin, is a long-chain fatty acid often used in candle-making. Its primary property is to raise the melting point of the wax mixture, making the resulting candle harder, more durable, and prolong the burn time (long burning). They also drip less than other candle wax composites.