Striation wire brooch

Striation wire brooch resembling the marks in rocks. wire criss crossed across a layer od mesh bound by two copper bars with curls on each end and surrounded by a filigree edge. Colours included are greens, browns, copper and golds and all back with an acid green felt. In geology, a striation is a groove, created by a geological process, on the surface of a rock or a mineral. Liinear furrows, or marks, generated from fault movement. The striation's direction reveals the movement direction in the fault plane. Similar striations, called glacial striations, can occur in areas subjected to glaciation. Striations can also be caused by underwater landslides. Striations can also be a growth pattern that looks like a set of hairline grooves, seen on crystal faces of certain minerals. Examples of minerals that can show growth striations include pyrite, feldspar, quartz, tourmaline, chalcocite and sphalerite. (thank you Wiki). The materials used in this pieces are all mostly recycled from electrical purposes - the copper wire, wire from old televisions and the felt on reverse is from an ASDA spectacles case.