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. Stereo microscope, eyepiece projection; halogen incandescent light with white LED fill-in / blue fluorescence under shortwave UV.

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