Have you heard of Tektites? These are one of the coolest rocks we sell!

Tektites (from Greek tektos, molten) are natural glass rocks up to a few centimeters in size, which most scientists argue were formed by the impact of large meteorites on Earth's surface.

Tektites are among the 'driest' rocks, with an average water content of 0.005%. This is very unusual, as most if not all of the craters where tektites may have formed were underwater before impact. Also, partially melted zircons have been discovered inside a handful of tektites. This, along with the water content, suggests that the tektites were formed under phenomenal temperature and pressure not normally found on the surface of the Earth.

Terrestrial impact theory

The terrestrial-impact theory states that a meteorite impact melts material from the Earth's surface and catapults it up to several hundred kilometers away from the impact site, which means that it must have travelled through space (thus explaining the dryness). The molten material cools and solidifies to glass. According to this theory, a meteorite impact causes their formation, but the precursor material of tektites is primarily of terrestrial origin, as determined from isotopic measurements. Today, the terrestrial origin of tektites is widely accepted based on the results of many geochemical and isotopic studies (e.g. Faul H.(1966), Koeberl C.(1990)).

The impact theory relies on the observation that tektites cannot be found in most places on Earth's surface. They are only found in four strewnfields, three of which are associated with known impact craters. Only the largest and geologically youngest tektite deposit in Southeast Asia, called the Australasian strewnfield, has not been definitively linked to an impact site, probably because even very large impact structures are often not easy to detect. Source: Wikipedia

These tektites are from this Australasian strewnfield.
Approximate sizes are: 0.5 - 1 inch wide by 1 - 2 inches long.

Please be aware that this is a natural rock and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece. They come in irregular shapes, sizes and weights. Photo shows three pieces for demonstration purposes only.

Box Size: 2.00in (5.08cm) x 1.00in (2.54cm) x 1.00in (2.54cm)

Recommended for ages 13 and older.

Weight: 0 lb 1 oz ( 0.03 kg )

  WARNING

CHOKING HAZARD Small parts. Not for children under 3 yrs.