Super rare, Scolecite with Stilbite onlay stones from Poona India (50-80 mm)

The mineral stilbite is a highly hydrated sodium-calcium-aluminium silicate with the chemical formula NaCa4Al8Si28O72·30(H2O). The tectosilicate belongs to the zeolites. The (cream) white, yellow, red or brown stilbite has a pearly to glassy luster and a white streak colour. The average density is 2.15 and the hardness is 3.5 to 4. The crystal system is monoclinic and the mineral is not radioactive. The name of the mineral stilbite is derived from the Greek stilbe, which means "shine". This is because of the pearly to glassy lustre of the mineral. Stilbite is a common zeolite that is formed in amygdaloidal fissures in basalts, such as pegmatites. There is no defined type locality, but the mineral has been studied in Iceland, the Andreasberg in the German Harz, the Dauphine Alps and in Norway.