Crossword puzzle clue "spectrum forming crystal"

Here are the possible solutions for spectrum forming crystal clue

Answer
Clue
Relevancy
prism
Clue
Spectrum-forming crystal
Spectrum-forming solid
Definition
(Greek) a solid figure of which the two ends are similar, equal, and parallel rectilineal figures, and the sides parallelograms
quartz
Clue
The crystal in some crystal balls
Definition
the commonest rock-forming mineral, composed of silica
arena
Clue
Philadelphia's Spectrum
The Spectrum, e.g.
Spectrum or Kemper
Philadelphia's Spectrum, e.g.
Omni or Spectrum
Definition
(Latin) any sphere of action

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