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Sigma KEE - SemipreciousGemstone

semiprecious gemstone

SemipreciousGemstone is the class of Minerals and other substances that have significant monetary value, but less than those of the class PreciousGemstone.

Relationships
Parents	gemstone	Gemstone is the subclass of Mineral items that are especially valued for use in jewelry and other decorative items, and also in some mechanical and industrial applications.