Answer:

OPAL

Answer	Crossword Clue
OPAL	Milky stone
OPAL	Fall birthstone
OPAL	October birthstone

OPAL	October stone
OPAL	Stone for some Scorpios
OPAL	Girasol
OPAL	Ring rock
OPAL	Translucent birthstone
OPAL	Autumnal birthstone
OPAL	Birthstone
OPAL	Fiery gem

OPAL	Fiery gemstone
OPAL	Fiery stone
OPAL	Fire or black gem
OPAL	Milky gemstone
OPAL	October's jewel
OPAL	Smoky gem
OPAL	Australia's national gemstone
OPAL	Milky gem

OPAL	Iridescent gem
OPAL	October gem
OPAL	Brilliant stone (4)
OPAL	Autumnal stone
OPAL	Iridescent stone
OPAL	Fire ..
OPAL	Onyx, in part
OPAL	Shade of gray

OPAL	Birthstone of some Librans
OPAL	Geyserite, for one
OPAL	Off-white shade
OPAL	Gem found on Mars
OPAL	Play-of-color gem
OPAL	Halloween birthstone
OPAL	Translucent gem
OPAL	Iridescent form of silica

OPAL	1995 hurricane that damaged the Florida Panhandle
OPAL	Coober Pedy mine find
OPAL	Precious Australian export
OPAL	... Fruits (Starburst candy, originally)
OPAL	Heat-sensitive gemstone