Precious metal "precious" metal can also be determined by high demand or market value. Precious metals in bulk form are known as bullion and are traded on commodity markets. Bullion metals may be cast into ingots or minted into coins. The defining attribute of bullion is that it is valued by its mass and purity rather than by a face value as money. The level of purity varies from issue to issue. "Three nines" (99.9%) purity is common. The purest mass-produced bullion coins are in the Canadian Gold Maple Leaf series, which go up to 99.999% purity. A 100% pure bullion is
Ordo Aurum Solis Isiac Traditions. These effectively combined the sacred Mysteries with the rationalism of Philosophy, which constituted the real genius of such esoteric traditions. Greek initiates were strongly present in Alexandria, in the latest period of Egyptian history known as the Ptolemaic period. They brought with them the Greek initiatic system of the Mysteries, which was then incorporated by the ancient Egyptian priests into their traditions, thereby giving a new, coherent structure to the same. According to Ordo Aurum Solis and its initiates, this was the real birth of the Hermetic Theurgic Tradition, later to be known as the Ogdoadic Tradition, or