Answer:

NACRE

Answer	Crossword Clue
NACRE	Abalone-shell liner
NACRE	Mother-of-pearl
NACRE	Oyster irritant

NACRE	Shell's pearly layer
NACRE	Mother of pearl
NACRE	Shiny lining
NACRE	Inlay material
NACRE	Button material
NACRE	Oyster shell interior
NACRE	Pearl's mother?
NACRE	Bead material

NACRE	Abalone product
NACRE	Iridescent button material
NACRE	Shell-lining material
NACRE	Iridescent shell layer
NACRE	Mollusk shell liner
NACRE	Guitar inlay material
NACRE	Shell layer
NACRE	Iridescent jewelry material

NACRE	Shiny shell lining
NACRE	Pearly coating
NACRE	Mollusk-shell material
NACRE	Pearly substance
NACRE	Jewelry material from mollusks
NACRE	Mollusk material
NACRE	Substance in an oyster
NACRE	Bead makeup

NACRE	Lustrous layer in some shells
NACRE	Iridescent shell coating
NACRE	Pearly shell layer
NACRE	Mollusk shell product
NACRE	Shell lining
NACRE	Abalone shell layer
NACRE	Knife-handle material
NACRE	Conch lining

NACRE	Button stuff
NACRE	Shell liner
NACRE	Caviar spoon material
NACRE	Molluscan material
NACRE	Mother of pearl.