Moldavite belongs to a large family of gemstones called "Tektites" originating from the Greek word "Tektos" meaning molten or fused.
Scientific theory says Moldavite was formed by a Stony Meteorite (chondrite) that is said to be a half mile to 1 mile in diameter. The Meteorite struck the Ries Germany area approximately 14.8 million years ago creating a impact crater 15 miles in diameter. Upon impact it ejected 11 million tons of material which landed on several strewn fields. Two of the main strewn fields are 37 miles apart.
The term "Moldavite" is derived from the word "Moldau" the German name for the river Vlata also known as the Moldau river valley.
It is said that Moldavite has often been identified as the stone from which the Holy Grail was carved.