Lapis Lazuli: A Starlit Sky
August 5th, 2008 at 10:23pm |
Lazulite, as the exquisite royal blue lapis is also called, differs from all other ornamental stones in that it is not a mineral but a rock which—evolving through pneumatolytic alteration from a contact-metamorphosed limestone—is made up of several minerals in varying amounts. As unique as this chemical composition is its unequalled night-dark blue, which Pliny [...]
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