The surface of titanium coated quartz crystal shot at around 5:1 magnification using a Prinzflex 28mm f2.8 m42 lens reversed and coupled onto the front of a 135mm f2.8 Pentacon m42, then on a set of bellows attached to my 5D mkiii. Lit with a couple off camera speed lights. All 3 are at least 15 image stacks processed in Affinity and PS. A bit of a newbie at this extreme macro stuff but I like how these came out.