Azahara Santoro / Aleksandra Vali
These rings looks like they were dipped into rainbow sherbet...
...which is fitting, because they actually used to dip into rainbow sherbet. Spanish jeweller Azahara Santoro used plastic from dozens of little spoons (notice the punched-out bits) to create her "Old for New" series. Visit her site for more, including rings made of chocolate.
Even more jewellery: