Related Clues:
- With 43-Across, yttrium or scandium
- Like natural pearls
- Infrequent and underdone
- Huge, enormous
- Infrequent like underdone meat
- Immense, huge
- Not plentiful
- Seldom seen or met
- Very scarce, hardly cooked
- Very scarce or undercooked
- Immense or huge
- Huge, immense
- Very infrequent or scarce
- Not easily come by like undercooked meat
- Scarce or uncommon