5 grams /

Calcite is found throughout the world in sedimentary

Dual type specimens were submitted to two different institutions because rare minerals were found in an excellent state of preservation

Approx Weight (per piece): 6-13 Carats incl

Libyan Desert Glass | Natural Impact Glass | 16.5 Grams | Authentic Impactite | SO24 Impactite 5 grams /This is a rare and fantastic 16. 5 gram Libyan Desert Glass from Kuffra, Libya, with dimensions of 37x28x19 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