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$ 24.99
Avogadro's constant: "the number of elementary entities per mole of substance". It's a big number...which is to say, there's a lot of stuff in the universe. Wear a piece of it with this hand-stamped tie bar.
Available in aluminum or bronze, it is sturdy enough to last a lifetime. (Note that hand-stamped lettering varies a little, so yours will be charmingly unique.)
Perfect for:
FREE SHIPPING for orders over $45 within the United States. Buy several items-- keep some and give others as gifts! If you don't quite hit the $45 total, First Class delivery within the U.S. is $3.50 per order, and Priority is $6.50 per order. Gift boxes are ALWAYS included for orders within the U.S. Unless otherwise stated above (near holidays), your order will be processed and mailed within 2 business days. (Near holidays, we often mail out same-day.)
| UNITED STATES | mailed within | in transit for | from ordering to arrival |
| Priority Mail | 1-2 business days | 1 - 3 business days | 2 - 5 business days |
| First Class | 1-2 business days | 2 - 4 days | 3 - 6 business days |
For all countries outside the United States, USPS First Class International shipping without gift boxes is $6 per order. Please note: USPS First Class International shipping can take a very long time to arrive, averaging 4 - 12 weeks, depending on the country. USPS tracking numbers will work only until the package leaves the United States. We will replace packages that go missing before exiting the US border, but cannot replace packages that disappear after that.
The customer is responsible for any VAT or import tax charges.
We are so sure that you (or your lucky gift recipient) will love our jewelry that we have a 100% Satisfaction Guarantee! If you are unhappy with your order for any reason, even if you just decided it wasn't your style after all, simply mail back your undamaged, unworn jewelry and we will give you a full refund minus shipping. Check our reviews... our goal is to get ALL THE STARS. If you have any kind of problem with your order, please email us at maile@boutiqueacademia.com. We want all of our customers to be completely satisfied!
I was impressed with how fast my order was shipped, and it pleased me more when it arrived. It's exactly like the beautiful website shows.
Really happy with the quality and packaging. It just gave a little something extra to the buying experience. They loved the birthday gift. I am sure I will be buying more gifts in the future from you.
...my step-daughter suffers with low self esteem, always a fight to just nudge her along, in almost everything, she graduated high school and this May college, with a degree in a field she will excel at, for the first time she is looking forward instead of her feet, I saw the bracelet, it was for her. Her battle her success, a little token of respect, to let her know, her mother and I noticed.
Another fantastic product from a fantastic company. Always a hit as a gift.
Everyone loved their gifts from your pop up store before Christmas! Very reasonable in price too.
My granddaughter really loved the physics jewelry.
I absolutely love this necklace! It is lightweight yet durable and the stars are clearly imprinted on the necklace! One of my favorite pieces yet!
Mobius Necklace "To thine own self be true"
Great site! A lot of awesome designs for Science minded folks and other open minded humans. My wife was stoked with the necklace.
I bought Christmas presents for my friends who are science majors on this site, and they all came early, were packaged beautifully, and are made so well. The craftsmanship is so impressive. I bought the brain necklace, bacteriophage necklace, and binary love necklace and they're truly all such beautiful pieces, this is going to be my go-to site for presents now. Truly quality products, highly recommend.
The necklace is exactly what I was looking for i.e. something different
Exactly as described and arrived in 2 or 3 days. I'm very happy.
These are the 2nd and 3rd purchases for us from Boutique Academia and they won't be the last! Excellent quality and beautiful craftsmanship.
Reasonably priced, and with a creative flair for things scientific, I thoroughly enjoyed perusing Boutique Academia before purchasing my caffeine chemical formula necklace.
I bought my wife who is an RN the anatomical heart necklace and earrings. She loved them. Great jewelry for anyone with a love for science.
Boutique Academia seems like a really lovely organization- my necklace arrived promptly and with great customer service pre-post delivery. My daughter loved the necklace which looks like the picture and is made of quality materials. So many cool things on the website, I will be purchasing again!
Love my "atomic" earrings. They are made well and have gotten several comments about them.
It's cute - lots better than I anticipated. Thanks for good craftsmanship!
My niece who just graduated with a B.S. Biochemistry degree loved this necklace. She thinks she will score points at her new job as a research assistant.
I bought this for a gift. It is perfect!
I love this company and all it represents. I lovingly describe it to people as "nerd jewelry", self identifying as such from my roots as a biology geek, but I mean it lovingly and I recommend B.A. to many people. From scientists, to coders, to teachers and therapists, everything the company offers piques my interest. I have ordered teacher and holiday gifts from you for years, and this year will be gifting myself the Latin necklace as inspo for 2020, and the two Serotonin, Dopamine, & Acetylcholine necklaces to therapists I know who work so hard for their patients. Thanks again for making inspiring stuff that rises about the rest. Excelsior.
My daughter is studying neuroscience and loved receiving this keychain as a gift. The detail is impressive.
Perfect! Beauty and science and diversity together.
Got exactly what i ordered, on time delivery, and a pair of earrings the GF loved
Very high-quality, worth the purchase! Very pleased.
I have 3 daughters who are all math and science women. The jewelry is really pretty and I can’t wait to give it to them for gifts this Christmas.
The pendant was just as pictured and it was delivered super fast
Boutique Academia is my new favorite place to get jewelry! The products are great quality. Everything is so unique and fun! Absolutely recommend!
I bought this for my daughter. she is extremely bright and smart beyond measure. I bought this for her and she loved it and wears it all the time.
The silver looks very nice and I t was exactly what I was hoping for. Would recommend!
I purchased this necklace as a gift, and she loves it. It arrived very quickly. It's a beautiful necklace, with a lovely message. Would recommend.
I have purchased several pieces from the Boutique Academia and they are all fantastic. Design and construction are perfect. I am planning on purchasing more items as time goes on. You won't be disappointed.
The Serotonin, Dopamine & Acetylcholine necklace is beautiful and the perfect gift for our chemistry grad student!
