!!! Notice for customers in the United States !!!
The price of shipping to the US includes all fees - customs and handling fees for the Czech Post (ID declaration). So after paying the shipping and sales tax, the customer does not pay anything else.
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Hyalite is a form of opal with a glassy and clear appearance which exhibits an internal play of colors and has natural inclusions. It is also called Muller's glass, water opal and jalite. Its Mohs hardness is 5.5 to 6 and it has a specific gravity of 2.1. It is an amorphous form of silica (SiO2). Its has a conchoidal fracture, a vitreous luster and a white streak. It is sometimes mistaken for resin opal, since they both look like little globs.