| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Sometimes mistaken for diamond, topaz is not just beautiful but hard, making it a solid 8 on this scale | Mohs | $2,000 | DJ | SCIENCE QUIZ | 2025-07-15 | #9377 | |
| Gypsum is 2 & quartz is 7 on this scale | Mohs | $2,000 | DJ | HARD SCIENCE | 2021-04-26 | #8386 |