Is a Hydrated Sodium Aluminum Silicate with formula :NaAlSi2O6-H2O and hardness 5-5.5
A mineral that belong to zeolites family, occur in various colors such as yellow to red ,but the most common is colorless like in this case. Rarely completely transparent, often opaque or translucente.A collector stone.
This is a rare variety with a reddish-white color from Alpe Siuse,Alto Adige, Italy.The size of crystals are always very small.
Weight: 0.59 ct.