Tektite in display box will all vary and be unique, they will vary in shape and size, the picture is to show an example of what you will receive 
 
Crystal: Tektite
Detail: Tektites are gravel-sized bodies composed of black, green, brown or grey natural glass formed from terrestrial debris ejected during meteorite impacts.
Chemical Composition: SiO2 Al2O3 TiO2 Fe2O3 FeO MgO CaO Na2O K2O
Finish: Natural