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Pi Necklace

Simple, elegant, and smart...this pi necklace is mathematically proven to be the perfect accessory for every occasion. It features your choice of a gold or rhodium plated pendant hanging from a gold or silver chain. The pendant measures about .7 inches (18mm), and is slightly curved for dimensionality.

Perfect for:

  • Mathematicians or math aficionados
  • Engineers
  • Architects
  • Rational and irrational people alike
  • Anyone cool enough to celebrate Pi Day

Customer Reviews

Based on 8 reviews
Gold Pi Necklace

My first time ordering from this website and I am very impressed. The necklace is beautiful and arrived in a timely manner. Thank you Boutique Academia your professionalism and attention to scientists/math lovers! Will purchase from here again.

Pi necklace

I am very happy with my necklace. Postage to Australia and service in general was outstanding.

Everithing went perfectly fine to Czech Republic

I ordered four gifts from your web to the Czech Republic. My order was realized during one or two weeks and everything went perfectly fine. Do not be afraid you can order to whole world.

A lovely gift to commemorate a special day

I ordered the Pi symbol necklace in gold for my best friend. She is returning to upgrading her math and science skills in her mid 30s and I will never forget her terror the day before she started. But now she's winning an award for maintaining an A average over the past two years, all while working full time. I'm so proud. I wanted to get something for the award ceremony to mark the occasion and this necklace is perfect. The shipping was lightning fast and the necklace is beautiful. The gift box is worth it. Thank you so much, I know I will be a repeat customer.

Super Fast!

I ordered a necklace which came very quickly. It's high quality and just what I wanted. Thanks so much!


Order by Dec 15 with First Class shipping or by Dec 16 with Priority Mail shipping for delivery before December 25 within the United States.

For last-minute shoppers: gift certificates are always a great option! If you don't want it emailed directly to the recipient, enter your email as the recipient and print out the document when it arrives in your email. Wrap in a nice envelope and voila!!


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 withinin transit for from ordering to arrival 
 Priority Mail  1-2 business days  2 - 4 business days  3 - 6 business days 
First Class  1-2 business days  3 - 5 days  4 - 7 business days

We do not currently ship to the European Union. For all other countries outside the United States, USPS First Class International shipping without gift boxes is $8 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!