SHOW OFF THAT A PROUD STEM EDUCATION WITH THIS SWEET SCIENCE NECKLACE SET! NECKLACE SET INCLUDES 2 FINE GORL LINK CHAIN NECKLACES THAT INCLUDE A ATOM PENDANT AND GREEN ENAMEL BEAKER NECKLACE. WEAR TOGETHER OR SHARE WITH YOUR SCIENCE LOVING BESTIE! 16-18" LONG, LOBSTER CLASP.