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Pi Tie Bar

6 items left

Ancient, mysterious, elusive, and beautiful -- pi symbolizes not only a number, but also the ongoing quest of science and math to approximate the universe just a little better. Wear a stylish and sophisticated piece of the eternal puzzle with this hand-stamped tie bar displaying pi to 10 decimal places.

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:

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

Customer Reviews

Based on 5 reviews
Alli Joseph
Love the tie pin for my math teacher nephew!

Searched for something cool to buy for our nephew, who recently transitioned to teaching from a corporate career. Found the Pi tie pin, and hope he wears it well to work sometimes. Well made and a fun gift! Arrived on time and nicely boxed.

Jem vohner
Pi Tied

I appreciate this more than anything, and I'll give it to someone special.

Tamara B.
Happy Pi Day!

Purchased for my son as a gift. He absolutely LOVED it! He stated that it was a nice surprise and was crafted very well. We celebrate Pi Day every year. Boutique Academia offers some awesome unique jewelry items!

irene c.
Totally satisfied

Quick, efficient, and exactly as shown on the photos.

Melissa B.
Great Purchase!

I bought this as a gift and it wad a huge hit! Thanks so much for quick shipping and great quality! This is the second item I've purchased from Boutique Academia and I will again!

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 $8 per order. Gift boxes are ALWAYS included for orders within the U.S. Orders are 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

International Shipping

All international orders are shipping in individual black velvet gift bags instead of gift boxes to cut shipping costs. Please see your country below for shipping options. We do not currently ship to the European Union. The customer is responsible for any VAT or import tax charges.

 AUSTRALIA & NEW ZEALANDCost Shipping TimeTracking Code
USPS First Class InternationalNot Available Not AvailableNot Available
GlobalPost Economy$20Less than 4 weeksTracks the entire delivery
CostShipping TimeTracking Code
USPS First Class International$10    Up to 8 weeksTracks up to your country's border
GlobalPost Economy$20    Less than 4 weeks

Tracks the entire

We do not currently ship to the European Union.


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!