MH90Y0: One of the scarce exceptional samples from the famous find of 2005 at the Jeffrey quarry, currently closed. The Diopside crystals have an uncommon shape, being apparently tabular, but with fine vertical striations and the presence of the pinacoid show they really are very flat prisms. Their color and luster are excellent and the transparency extraordinary. To all this we must add their association with prismatic greenish-yellow and violet Vesuvianite crystals.
Jeffrey Mine, ↓200 m, Asbestos, Les Sources RCM, Estrie, Québec  Canada (09/2005)

Specimen size: 11.3 × 8.7 × 6 cm = 4.45” × 3.43” × 2.36”

Main crystal size: 1 × 0.5 cm = 0.39” × 0.20”