Lectures on Tap Presents: Lectures on Tap - The Science and Psychology of Gemstones

Gemstones are far more than beautiful rocks—they’re the product of extreme geological processes, billions of years of Earth’s history, and centuries of human obsession. In this science-driven (but decidedly not dry) lecture, GIA Graduate Gemologist Tristan Griffey-Jones reveals how gemstones form, how experts identify them, and why ruby and sapphire are actually the same mineral.