Quartz on siderite

Dimensions: 13 x 8cm
Location: Mine in Giraud, La Gardette, Bourg d’oisans, Iséres, France
A fine matrix of Siderite pleasantly highlights these  Quartz crystals with a very beautiful shine, of a quality typical of La Gardette.
 Dimensions without the acrylic base, which is supplied with the mineralogical specimen.
The mineral is not stuck to the base.