Color: green, green-brownish, bottle green.
Tectite are natural glass associated to meteoric craters. It shows a rough and striated aspect in it's natural form.
Hardness: 5.5 Mohs scale.
Specific gravity: 2.40.
Optical properties: Isotropic.
Refractive index:: around 1.480 to 1.500.
It's name oi given because of the Moravia state in Czeck Republic were it was discovered. Moldavite is the most gemological valuable Tectite variety.