Gem-name guide / Group / gem material

Spectrolite

Spectrolite is a gem or trade name associated with Plagioclase feldspar. Consult the linked nomenclature source for its relationship to Labradorite.

Material or mineral family: Plagioclase feldspar
Name classification: Group / gem material
Related names / synonyms: Labradorite

This entry is not linked to a single mineral species. A gem name can refer to a group, a mixture, natural glass or biological material.

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Names describe materials, not the authenticity, treatment, provenance or quality of a particular specimen. Physical properties vary for mixed materials; values absent from this guide have not been estimated.

Reference snapshot: September 2026. Source dates and uncertainties are retained in the record.