| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Almost 400 workshops for this black volcanic glass have been discovered in Teotihuacan | Obsidian | $500 | J | ANCIENT AMERICANS | 1996-04-05 | #2680 | |
| The Stone Age stones used for tools were flint & this black volcanic glass | obsidian | $800 | DJ | ANCIENT HISTORY | 1994-01-25 | #2167 |