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Tektite B+++ 20.9g
- Value: €62.00
- Quantity: 20.9g
- Quality: B+++
- Origin: Asteroid impact (Tonkin bay, Vietnam)
- Hardness: 6,5 – 7 Mohs (O'Keefe, NASA)
- Chemical composition: SiO2 (+Al2O3)
- Damage: Micro chip
- Locality: Yen Bai, Vietnam
- Dimensions: 6.3cm x 2.4cm x 1.3cm
- 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.
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