Mordenite 3.34 ct Fancy Kite Cut 18.00 x 9.20 x 5.50 mm Italy w101

Mordenite

a mineral that belong to the group of zeolites. The formula is (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O with hardness of 3-4. Generally is found as spray of tiny needles therefore is not easy to find the wey to cut a stone.In addition to it is quite brittle due to it's structure and very small cavities may be see.The colors may be colorless,white or pinkish like this stone here.

The location where it comes from is Drio Le Pale, Fassa Valley, Trento province, Italy; and it was associated with heulandite.