kwartsiet-HELLAS-BLUE-OPUS-INCERTUM-quartzite

kwartsiet-HELLAS-BROWN-OPUS-INCERTUM-quartzite

leisteen-BLACK-PANTHER-ardoise

kwartsiet-vrije-banden-HELLAS-GREY-en-bandes-quartzite

portugese-leisteen-INFERCOA-ardoise-portugaise

leisteen-GRIZZLY-ardoise

kwartsiet-ALBINO-YELLOW-quartzite

kwartsiet-albino-rose-quartzite