“Gypsum ram's horn (point of attachment toward bottom of photo) that has been covered with transparent prismatic crystals of gypsum oriented to underlying crystals that make up the ram's horn, with the result that the prismatic crystals lie tangent to the curve. The curved core of the specimen fluoresces yellow and white in SWUV with slight phosphorescence. Purchased in 2020 from Lehigh Minerals.”

“View of the other side of the specimen.”

“Detail of the larger gypsum crystals overgrowing the gypsum ram's horn.”