Moldavite
Moldavite is a rare type of meteoric/tectonic glass. Being natural glass (SiO2) it is amorphic rather than crystalline and has a hardness of 5 on the Mohs Scale. Forming due to the impact of meteors, tektites are given different names depending on where they fall to earth. The term Tektite usually refers to specimens from the Philippines, and they are usually black in colour. Moldavite only comes from the one meteor impact and is only found in Molvania, Czechoslovakia. It is one of the most highly valued tektites and is highly prized for it beautiful bottle green colour.
Tourmaline
Tourmaline is the name given to a very chemically complex (A(D3)G6(Si6O18)(BO3)3X3Z) family of stones. With slight chemical differences it comes almost every colour varying from light to dark. All types of tourmaline form according to a hexagonal crystal system and have a hardness of 7.5 on the Mohs scales. These are considered precious stones and some varieties are highly valued.




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