How many letters does the top answer for “a pale green variety of chrysolite; used as a gemstone” have?

The most common answer is peridot (7 letters).

Crossword clue: a pale green variety of chrysolite; used as a gemstone

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

peridot 7 letters wn-def

a pale green variety of chrysolite; used as a gemstone

a green variety of chrysoberyl used as a gemstone 57% similar → alexandrite