
Red King (Sulphur)
“This image is taken from the 23rd image in a series of drawings from the seventeenth century alchemical work attributed to Eugenius Philalethes, the Speculum Veritatis (Mirror of Truth). This simple symbol of a fire triangle with three radiating arrows below represents the ‘Perfect Red King’, the Sulfur of the Philosophers.” – symboldictionary.net
see also sulphur