Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption

Size: 12x10mm

Specimen Size:  Miniature Sized

is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color

It is a gemstone of love and romance and is believed to bring and enhance joy

Quartz and Galena Crystal Cluster | 59 grams | Mogila, Madan, Bulgaria Volcanic Olivine Volcanic bombs are large clotsThe LeadZinc deposits of Madan Ore Field (Southwest Rhodopy Mountains) were operated by the Turks in the Middle Ages. Greek coins from Tassos island dating from 14th century AD, have been found in the ancient galleries. As well, the name of the Madan field, which in Turkish means Ore, originates from that time. The Madan Ore Field is built up mainly of the highly crystalline rocks of the lower (Ar) and upper (Pt) metamorphic units which form the Madan