weighing 11

849 billion years ago at the Sudbury Basin (also named Sudbury Structure) in the Paleoproterozoic era

Product Type:  Prasiolite | Green Amethyst | Quartz

" named after the alexandrite gemstone

parallel stacked groups and aggregates

Libyan Desert Glass | Natural Impact Glass | 3.9 Grams | Authentic Impactite | SO24 Spade weighing 11This is a rare and fantastic 3. 9 gram Libyan Desert Glass from Kuffra, Libya, with dimensions of 29x18x8 mm. Although its exact origin is still debated, the leading theory suggests it was formed by a high energy event, such as a meteoric impact or airburst, that melted the desert sand directly where it lay, without being ejected into the atmosphere and re entering. This results in different physical characteristics compared to tektites. Libyan Desert