Lawsonite Value, Price, and Jewelry Information
Lawsonite is extremely rare as a faceted stone, seldom reported and generally unavailable.
By Joel E. Arem, Ph.D., FGA, updated on
Optics: a = 1.665; β= 1.674-1.675; γ= 1.684-1.686.
Biaxial (+), 2V= 84°.
Occurrence: Low-temperature metamorphic rocks; metamorphic schists; glaucophane schists. Santa Clara, Cuba; Italy; Japan: New Caledonia: France; Italy; other locations.
Tiburon Peninsula, California: original material.
Covelo, Mendocino County, California: 2-inch crystals.
Comments: Lawsonite is extremely rare as a faceted stone, seldom reported and generally unavailable.
Name: After Professor A. C. Lawson of the University of California.
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