Grandfather clock mechanism
Electrical contact pins
Graffiti on concrete
Madagascar white ammonite fossil
1 carat diamond
Inclusion imperfections in VS2 diamond
Animal vertebrae (possibly deer, found in woods by our dog).
Icecle
Quartz crystal pieces
Gear set from automobile manual transmission.
40-grit aluminum oxide sandpaper
Multichip module
Vitamin C crystal
4-40 spiral flute tap (used to make threads in metal).
Button
At a rocky beach
Embers
Ballpoint pen on paper
Planetary gears
Ball grid array microchip
Electronic resistor
Microchips on a wafer
Motor armature, windings and commutator
Dew on spider web
