That's an appropriate use of a supporting prop, it satisfies all
the criteria. It shows size, most people know the size of a tea
Sorry, I now realize that what I wrote was unclear.
First, there is no “size prop” in the linked photo. That teabag is
part of the piece, and though it IS exactly teabag size, it is made
of copper screen and filled with tourmalines (c.50 carats) and
diamonds (c.3.5 carats).
I linked the photo in reference to the miniature pots that are
inside the silver teapot. I was saying, when I photographed these
miniature pots (and others like them-- I made quite a few) on their
own, I used a penny in the shot because otherwise they just look like
I also made a 4" chair that came apart into jewelry, and a few
people have told me they thought from the image that it was a
full-sized chair. But I still think it would look tacky to put an
extraneous object in the image, though I can see that for a web site
or online store, photographing a piece on rice or beans could work
well, depending on the style of work.