bluestone
Pronunciation:
noun
Definitions
Any of several bluish grey varieties of stone used for construction:
Either of two related copper- and sulfur-based bright blue stones:
Lapis lazuli, or its core constituent, lazurite.
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Definitions
Any of several bluish grey varieties of stone used for construction:
Either of two related copper- and sulfur-based bright blue stones:
Lapis lazuli, or its core constituent, lazurite.