Enter a clue or pattern or both:
The Clue
Stone made of silicon and oxygen (4 letter answer)
The Answer
OPAL
Tags
Notes
The answer OPAL is very common and appears about once every 41 puzzles.
Related Clues
Birthstone
Fire ___
Gem
Geyserite
Girasol
___ glass
Hyalite
Menilite
Fall birthstone
Fire ___ (gem)
Form of silica
Gem for J.E.C.
Iridescent gem
Iridescent mineral
Iridescent stone
J.E.C.'s birthstone
Milky gem
Oct. birthstone
October birthstone
October gem
October stone
Oculus mundi
Shade of gray
Birthstone for many Libras
Destructive 1995 hurricane
Gem for some Libras
Gemstone for most Libras
Harlequin ___ (varicolored stone)
Off-white shade
Stone of many colors
Translucent precious stone
It has a play of colors
It may be black or harlequin
Definition
OPAL as a noun:
1. a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones