Related Clues:

• Like Uranus vis-a-vis Jupiter
• Harder to find
• Less plentiful
• Less available
• Closer to extinction
• Pinker than pink
• Less common
• Not so common
• More precious
• More enticing, to a philatelist
• More endangered
• Relatively red
• Pinker or harder to find
• Closer to extinction, perhaps
• Not as common