What is Alum? Origins, Production & Use
Alum has a multi-toned nature. Alum denotes a group of chemical compounds characterized by double sulfate salts. Alums are used across...
What is Alum? Origins, Production & Use
Aluminum(III) Oxide: Secrets of Precious Gemstones
Corundum: Secrets of Valuable Gemstones
Making Sapphire & other Precious Gemstones
Sapphire Gemstones: Colors, Myths, Origins & Gemology
Earth of Chios: Ancient Alchemy, Cosmetics, & Medicine
5 Waters of Ancient Alchemy: Aqua Caustic
Alchemical Salt: Essential Salts of Alchemy
Zinc (Zn): Essential Metal in Alchemy & Medicine
Almadén Mines: Ancient Mercury Extraction
Ancient Traders & Buyers: Art of Testing Metals
Metal & Gemstone Dyeing in Alchemy
Alchemy: Philosophers' Stone History & Lore
Limonite: Ancient Earth Pigments
Seven Metals of Antiquity - Metallurgy