The second pair, the skull earrings were converted by BlackSweety (Kristina) and originally meshed by Nouk for TS2, you can find them here: http://onemoresim.blogspot.com/2010/10/nouks-amazing-earrings-for-ts3.html . There are about a dozen other designs, the skull design is one preset.
I initially thought the first pair was by Children of Twinbrook, but her earrings are slightly different. The top cuff on the ear looks like it's by Glaza here: http://allbyglaza.blogspot.com/2012/06/piercing-with-spikes.html . It might be layered on with another piece of jewelry with Master Controller, I'm going to keep hunting around though.