It is a type of tektite

Approx Weight (per Strand): 79

This makes Tsumeb dioptase highly collectible

Origin: Mined in Nikitovka

Specimen Size:  Large Cabinet-Sized

Libyan Desert Glass | Natural Impact Glass | 9 Grams | Authentic Impactite NWA 978 It is a type ofThis is a rare and fantastic 9 gram Libyan Desert Glass from Kuffra, Libya, with dimensions of 28x21x18 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