Crossword clue: a mineral of a hyacinth or honey-yellow color, occuring in square octahedrons. it is an antimonate of calcium.

The most common answer is romeine (7 letters).

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

Possible answers

romeine 7 letters web-def

A mineral of a hyacinth or honey-yellow color, occuring in square octahedrons. It is an antimonate of calcium.

romeite 7 letters web-def

A mineral of a hyacinth or honey-yellow color, occuring in square octahedrons. It is an antimonate of calcium.