Related Clues:
- Material in many Forbidden City relics
- Makeup of many Qing dynasty carvings
- Foundation of many islets
- Bore via repetition
- Gem in Chinese carvings
- Vocal about going ahead to see reef creatures
- It forms reefs in warm seas
- Third grade got with exam? It's pretty hard
- Pink hue named for a sea creature
- Marine polyps, often forming reefs
- Gem in carvings of Buddha
- William Herschel used a microscope to show that this marine animal is not a plant
- Atolls, essentially
- Seaside souvenir
- ___ reef: warm, shallow salt-water area