Many people with Ehlers-Danlos syndrome have soft, velvety skin that is highly stretchy (elastic) and fragile. Affected individuals tend to bruise easily, and some types of the condition also cause abnormal scarring.
Quartzite is a metamorphic rock that is formed from the sedimentary rock sandstone. Slate is a metamorphic rock that is formed from the sedimentary rock mudstone. Granulite is a metamorphic rock that is formed from the igneous rock basalt.
This process is called metamorphism, and the resulting rocks are called metamorphic rocks, which means changed or altered rocks. By metamorphism, granite has often been changed to gneiss, the pressure having caused the granite to squeeze out or flow, so as to develop a somewhat stratified appearance, conspicuous minerals like black mica having been pressed out and gathered into layers of concentration.