Australites are a distinctive variety of Tektite formed around 790,000 years ago during a major meteorite impact event that created the vast Australasian strewn field. This is the largest known strewn field on Earth, extending across Australia, Southeast Asia, and into the Indian Ocean. During the impact, terrestrial material was melted and ejected high into the atmosphere, where it cooled and solidified into natural glass before returning to Earth. The exact source crater remains uncertain, adding an element of ongoing scientific interest to these well-studied specimens.

Australites are typically dark brown to black with a smooth, glossy surface and are especially known for their aerodynamic shapes. These include discs, dumbbells, and the well-known ‘button’ form, which features a flanged edge created during high-speed atmospheric re-entry. Their shapes reflect both their molten origin and the intense heating and reshaping they experienced during flight. This combination of form and texture makes them some of the most recognisable and visually distinctive Tektites.

Australites remain highly regarded within Tektite collecting due to their clear formation history, characteristic shapes, and wide scientific study. For collectors, they offer a strong balance of visual appeal and geological significance, representing a well-documented example of impact glass formed under extreme conditions. Each specimen preserves evidence of both the initial impact event and the dynamic processes that followed during atmospheric re-entry.