Lectures on Tap Presents:
The Royale · San Francisco, CA
Date & Time
- Date
- Monday, November 23, 2026
- Time
- 6:00 PM PST · Time may vary; check the source
Art
Tickets and details at theroyalesf.com →
About this event
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.
Description from theroyalesf.com
Get more events like this
Free daily picks for live events around San Francisco. No account needed.
Reminders arrive the day before, with our daily picks. Unsubscribe any time.
