I've worked on this sterling silver with rhodonite necklace during the weekend and only today I had a chance to take a picture with me modeling it. I like it quite a lot.
I've put the necklace last night in the tumbler and it shines now so nicely :)
Before putting it in the tumbler, I checked first about the hardness of rhodonite, as some stones (like turquoise, or pearls) do not fare well in the tumbler for a long time (say longer than 15 minutes, others nothing at all). But rhodonite has a hardness of 5.5 to 6, so I though 'all is well', as they say it's safe to tumble any stone with a hardness of at least 5.5. And safe it was, indeed :)
Here is a good place to check for the Moh's hardness of your semiprecious (or precious) stones if you're not sure you can tumble polish them or not.
And here is the matching pair of earrings. Handmade square earwires as well.