Tektite A++ 5.8g

Value: €35.00

Quantity: 5.8g

Quality: A++

Origin: Asteroid impact (Tonkin bay, Vietnam)

Hardness: 6,5 – 7 Mohs (O'Keefe, NASA)

Chemical composition: SiO2 (+Al2O3)

Damage: Large chip

Locality: Jinkouhe District, Leshan, China

Dimensions: 3.3cm x 3cm x 1.1cm

A quality - prime specimens in terms of morphology, color, and light reflection.

B quality – medium grade specimens.

C quality - specimens with basic morphology, color, and light reflection.

An additional plus stands for morphological beauty (+), color (+), or sunlight reflection (+).

Undamaged - the specimen is faultless.

Micro chip - minor surface damage from 1mm to 4mm.

Small chip - minor surface damage from 4 mm to 8 mm.

Large chip - surface damage from 8 mm to 12 mm.

Big chip - surface damage over 12mm.