Depiction of The Devil (almost certainly) surrounded by demon names and corresponding sigils from “Le serpent de la Genèse” (The Serpent of Genesis) Volume 2, by Stanislas de Guaita, 1920. Source: Embassy of the Free Mind
Seals and characters for summoning the greater demons Lucifer, Beelzebub, and Astaroth. In order of effectiveness, the symbols must be drawn in either: the sorcerer’s blood, the blood of a sea turtle, or engraved on emerald or ruby. From Grimorium Verum (16th Century) and The Grand Grimore (18th Century). Source: “The book of black magic and of pacts”, A.E. Waite, Embassy of the Free Mind
