Hello David. There many various but similar methods for good
jewellery photography results. My advice to anyone who asked was.
Dont waste money on expensive lighting and light tents. Buy 1 square
meter of white silk and make a hole in the middle for the lens. A
sheet of white perspex. Fasten the corners of the silk out of the
wayso they dont get in the way of the shot. Set your camera to macro
settings if it has it or aperture prioritydown to at least 22.
Automatic modes work good enough too. Then play with the white
balance if the colour isnt looking right. I take photos in natural
light near a window. I get a really good natural colour for the
stones and metal.
I know a few professional photographers who had spent $400,000 on
gear and yes there photos are better, but not $400,000 better. The
biggest improvements you will see is from getting really good at
usingphotoshop. Another really helpful thing is to use a camera that
can be plugged into amonitor so you can see an enlarged view of the
shot before you click soyou can see clearly exactly what is on focus
and what isnt.