What is Alum? Origins, Production & Use
- 14 hours ago
- 4 min
Aluminum(III) Oxide: Secrets of Precious Gemstones
- 16 hours ago
- 4 min
Corundum: Secrets of Valuable Gemstones
- 18 hours ago
- 4 min
Making Sapphire & other Precious Gemstones
- 21 hours ago
- 6 min
Sapphire Gemstones: Colors, Myths, Origins & Gemology
- 4 days ago
- 4 min
Earth of Chios: Ancient Alchemy, Cosmetics, & Medicine
- 7 days ago
- 6 min
10 Alchemical Metals - Ancient Metals of Alchemy
- Sep 14
- 4 min
Diplosis: Gold Doubling & Multiplication in Alchemy
- Sep 14
- 3 min
Ancient Greek Alchemy: ios and iosis
- Sep 3
- 3 min
Leap to Flames: Why Did Empedocles Jump into Mount Etna?
- Sep 3
- 5 min
Alchemy Process of Congelation: Freezing, Crystallization
- Sep 2
- 5 min
Alchemy Processes Invented by Islamic Alchemists
- Sep 2
- 5 min
Salt in Alchemy: Alchemical Uses & Lore
- Sep 1
- 3 min
Science of Rust Earth Pigments & Colors
- Sep 1
- 3 min
Goethite: The Other Iron-Rich Mineral
- Sep 1
- 3 min
Knowing the Three Primary Oxides of Iron
- Mar 3
- 5 min
Limonite: Ancient Earth Pigments
- Oct 13, 2023
- 6 min
Seven Metals of Antiquity - Metallurgy