Chris has a point, you can link to your other items in your listings. For instance you can say, "I have more tribal jewelry listed here:", and then you can link to all your tribal jewelry.
And yes Chris, google does look through shop section titles, which is actually an argument for having titles that aren't as simple as necklace, bracelet, etc. I tried that, for example chainmaille bracelets, rustic jewelry, but I didn't notice any difference, other than I had less visits to my sections.