Answer:

pearl

Answer	Crossword Clue
PEARL	Oyster's creation
PEARL	White gemstone
PEARL	Beauty

PEARL	Off-white shade
PEARL	Gem in an oyster
PEARL	June birthstone
PEARL	Gem strung on a necklace
PEARL	Shade of white
PEARL	Bit of wisdom
PEARL	Gem whose authenticity can be checked by rubbing it against the teeth
PEARL	Fine example

PEARL	Unit of wisdom?
PEARL	[30]
PEARL	Cultured gem
PEARL	... onion
PEARL	Shade of gray
PEARL	Masterpiece
PEARL	It may start as a grain of sand
PEARL	Gem of an oyster

PEARL	Small treasure
PEARL	Stickpin head
PEARL	Oyster's prize
PEARL	Modern June birthstone
PEARL	Necklace item
PEARL	Oyster's center
PEARL	Precious one
PEARL	Rock's ... Jam

PEARL	5 point type
PEARL	Hester Prynne's daughter
PEARL	Oyster catch?