Perhaps someone has already given this site as a super free resource,
but I want to give those who don’t know about it a heads-up.
This site has a number of comprehensive tutorials on how to
photograph jewelry and It also lists (& sells) many
different tools to accomplish this, but whether you buy or not, the
tutorials are awesome.
One of the biggest headaches in jewelry design is transferring super
jewelry designs into photos that convey your imagination and quality.
This site will greatly help!