- Lawsonite, Glaucophane
- Small Cabinet, 5.7 x 2.8 x 2.5 cm
- Valley Ford, Sonoma Co., California, USA
Lawsonite is a relatively rare Calcium, Aluminum Silicate, and some of the finest specimens in the world are found in California. Although this piece is not from the type locality in Marin County, it is a good reference specimen featuring a few small, sharp, bladed crystals of white Lawsonite with associated grey Glaucophane. Ex. Allen Heyl Collection.