Color is black or green Luster is vitreous to dull. Gemmy tektites are transparent to translucent, but most are nearly opaque. Crystal System does not apply because tektites are amorphous. Habits are usually small nodules or splinters that vary from simple rounded shapes to very intricate natural carvings. Many have smooth, scarred, or pitted surfaces.
Fracture is conchoidal.
Streak is white. Best Field Indicators are color, odd shapes, localities and lack of cleavage or crystal faces.