Answer:

RARER

Answer	Crossword Clue
RARER	Harder to locate
RARER	Less done
RARER	Less plentiful

RARER	More unusual
RARER	Not so frequent
RARER	Thinner, as air
RARER	More valuable, to a numismatist
RARER	Less well done
RARER	Harder to find
RARER	More like a blue moon
RARER	Not as well done

RARER	Not so well-done
RARER	Less seen
RARER	Tougher to locate
RARER	Harder to hunt down
RARER	Not as common
RARER	Not so likely to pop up
RARER	Not as widely distributed
RARER	More red

RARER	Harder to dig up
RARER	Not seen as often
RARER	Less common
RARER	More valuable to collectors
RARER	More valuable, as coins
RARER	More valued, in a way
RARER	Not as easy to come by
RARER	Not seen as much

RARER	Redder inside
RARER	More elusive
RARER	Less grilled, say
RARER	Less likely to be seen
RARER	Not as prevalent
RARER	More collectible, maybe
RARER	Less frequent
RARER	Less likely to appear

RARER	More pink, as a hamburger
RARER	Comparatively uncommon
RARER	Less cooked, as a steak
RARER	Pinker in the middle
RARER	Pinker inside