Group of gypsum crystals, in parallel growth, with siderite inclusions. Open pit exploitation (corta) located next to the San Valentín corta. It belongs from the collection of Joan Astor.

This specimen shows an interesting group formed by a bluish, very bright botryodal chalcedony, which is partially covered by aggregates of calcite crystals, flattened, in axial growth, and with an excellent transparency and brightness. A worthy specimen of this near to disapeared quarry, close to the San Valentín quarry. A very aesthetic piece of this classic Murcia mining area.