The red carbochon is probably Carnelian, bought in Germany
(yes, sometimes I also like to process purchased gems).
Made and photographed in Greece.
From Wikipedia: Carnelian is an opaque to slightly translucent variety of chalcedony with two-tone red-white to orange-white bands. It therefore consists of quartz in fibrous form, the fine-crystalline structure of which only becomes visible under the microscope.