Concrete Brooches / pieces of the universe, Black

Somewhere in the universe ... Planet or moon or ... I made a broach in the image of unknown ore and ooparts in there. As a pin to keep rough-hewn woolen knit, a muffler and a stall, how about as one point on a canvas place and a leather bag, a hat? Color: Black Size: Total vertical 5.5 × width 8 × thickness 1.5 cm (excluding metal fittings) Weight: Approximately 40 g Material: Concrete, Broach pin Because of the weight, it is not suitable for thin cloth. The damage to cloth will be reduced by stabbing a pin like ordinary sewing, and keeping it. It is made by the same mold, but coloring, bubbles, chips and etc are somewhat different depending on individuals. It is inferior in strength compared with plastics. Please acknowledge that there is a risk of cracking if it gives a strong shock.