I have no idea how I missed this before the holidays (sorry!), but NBDesigns has a line of oxidized silver embryo jewelry that is pure vintage lab-chic. The embryonic mice are particularly adorable:
And, on the less-cute, more-sciency end of the spectrum, her embryonic chicks look just like illustrations in an old dev bio textbook:
I should also note, since we are coming up on Valentine's Day, that she makes Erlenmeyer flask earrings and pendants with little hearts. (You can also request a glass heart worked into the chain of the zebrafish embryo pendant, or check out her sloth & heart necklace).
All images courtesy of NBDesigns.