Description: Benitoite on/in Natrolite on matrix, with minor brown grains of a Joaquinite group mineral; Dallas Gem Mine, San Benito Co., California, USA. Length of specimen about 15mm, Benitoite xx to 3mm. GN's collection id 09USBnjm2. Taken in direct sunlight. Stereo pair.

All pictures, text, design © Forum FMF 2006-2025