
https://www.etsy.com/listing/210675414/rose-gold-serotonin-necklace-silver?ref=market

https://www.etsy.com/listing/210675414/rose-gold-serotonin-necklace-silver?ref=market
For everyone who likes to stay calm. Available here in a variety of metals and chain lengths starting from $36.

http://www.thinkgeek.com/product/islh/

http://www.thinkgeek.com/product/islh/
Buy them here for $19.99 from ThinkGeek.

https://www.etsy.com/listing/253596349/solar-system-necklace?ref=market

https://www.etsy.com/listing/253596349/solar-system-necklace?ref=market
Buy it here in walnut or cherry wood for $17.95.
8. Microscope Necklace

Boutique Academia / Via boutiqueacademia.com
Available here for $18.99 with either a modern or vintage style microscope charm.
10. Heartbeat Necklace

Boutique Academia / Via boutiqueacademia.com
Buy it here for $18.99 in silver, black, or gold.

https://www.etsy.com/listing/235465763/lichen-moss-terrarium-resin-ring-size-7?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=science%20ring&ref=sr_gallery_22

https://www.etsy.com/listing/235465763/lichen-moss-terrarium-resin-ring-size-7?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=science%20ring&ref=sr_gallery_22
Buy it here for $26.

https://www.boutiqueacademia.com/collections/science/products/mitochondria-necklace

https://www.boutiqueacademia.com/collections/science/products/mitochondria-necklace
Available here in two chain lengths for $34.99.

https://www.etsy.com/listing/219145961/human-femur-bone-ring-science-jewelry?ref=market

https://www.etsy.com/listing/219145961/human-femur-bone-ring-science-jewelry?ref=market
Available here in a variety of metals and materials starting from $19.95.

https://www.etsy.com/listing/247053566/sterling-silver-carbon-atom-necklace?ref=related-3

https://www.etsy.com/listing/247053566/sterling-silver-carbon-atom-necklace?ref=related-3
Buy it here for $35.

http://www.ilovesciencestore.com/moon-phase-bracelet-with-7-images.html

http://www.ilovesciencestore.com/moon-phase-bracelet-with-7-images.html
For all the lunar lovers out there. Buy it here for $45 from I Love Science store.

https://www.etsy.com/listing/269407618/serotonin-molecule-ear-pin-earrings?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=chemistry%20earrings&ref=sc_gallery_2&plkey=ec1a6bb604f37c35fd3bc5525257c08180d7cd4c:269407618

https://www.etsy.com/listing/269407618/serotonin-molecule-ear-pin-earrings?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=chemistry%20earrings&ref=sc_gallery_2&plkey=ec1a6bb604f37c35fd3bc5525257c08180d7cd4c:269407618
Available here for $15.

https://www.boutiqueacademia.com/collections/science/products/solar-spectrum-necklace

https://www.boutiqueacademia.com/collections/science/products/solar-spectrum-necklace
Hold it up to the sunlight to see all the colors. Available here for $39.99
20. Acetylcholine Pendant Necklace

Boutique Academia / Via boutiqueacademia.com
Buy it here for $18.99. Also available with serotonin and dopamine pendants.