| Answer | Crossword Clue |
|---|---|
| PEARL | Prize in an oyster |
| NACRE | Substance in an oyster |
| PEARL | Find in an oyster |
| PEARL | Gem in an oyster |
| PEARL | Treasure in an oyster |
| IOLE | Hercules' prize in an archery contest. |
| DOGNEUTICLES | Invention for which Gregg Miller won an Ig Nobel Prize in 2005 |
| ADOLPHE | Luxembourg grand duke in whose name an annual art prize is awarded |
| BELLYBUTTONLINT | Object of study for which Karl Kruszelnicki won an Ig Nobel Prize in 2002 |
| COMBOVERHAIR | Patented innovation for which Donald Smith and Frank Smith won an Ig Nobel Prize in 2004 |
