Very nice! And the inclusions are great too, as well as your larger items. Good stuff for guy-jewelery too.
...How heavy are they?
...Do you use something like Quikrete or stonecraft mixes, or what? ...And have you ever tried hypertufa?
...For very smooth items like these, do you use HDPE or silicone molds, or something else really smooth?
Have you ever tried doing mixed media with the concrete using polymer clay, clear resins that're inset, etc, etc.??
P.S. You'll get a lot more views by posting an actual image or two in this message.
And you can post images after you've made at least 10 posts/replies/etc (of any kind, anywhere on craftster.org). http://www.craftster.org/craftsterguide.html#anchor5b
And to get the ball rolling, you might want to post in the Completed Projects
board for Jewelry & Trinkets first since more people read that sub-board than this one (or even post in More Art, Less Craft, or Home Sweet Home for the home dec things, or other boards).