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Definition of Ruby spinel
1. Noun. A spinel used as a gemstone (usually dark red).
Exact synonyms: Spinel Ruby
Generic synonyms: Spinel
Specialized synonyms: Almandine, Balas, Balas Ruby, Rubicelle
Generic synonyms: Spinel
Specialized synonyms: Almandine, Balas, Balas Ruby, Rubicelle