9.5cm

Here is a 9.5cm by 5.5cm translucent deep sage green Prehnite from the Prospect Park Quarry in Prospect Park, NJ. This appears be a multi layered growth over a concretion matrix. At a micro level you can see the Prehnite trying to form in botryiodal growths with an unusual stepped type pattern. ( almost like you’d see in garnets)! Very unusual museum quality piece.

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