Slender to thick prismatic slightly blue to grey crystals to 1cm. The crystals show "striations" and internal basal cleavages, which is consistent with the descriptions. Lawsonite is abundant in the coast range of California. It is a good indicator of high pressure and low temperature metamorphic regimes occuring typically in glaucophane schist and converts to Anorthite at high temperatures.
Although a dirty looking specimen, the crystals are good and the older tag accompanied with the specimen is ex-Paul Moore.