Hanusa Design

Runway alert! This unique #mathjewelry has been on the runway in Europe. And now you can own it to make a statement for your own night out.

Hanusa Design is closing in six weeks so this is your only chance to get these one-of-a-kind pieces. Check out the remaining stock at hanusadesign.com. #mathsky

Runway alert! This unique #mathjewelry has been on the runway in Europe. And now you can own it to make a statement for your own night out.

Get while the gettin's good! The Hanusa Design website has been restocked and reflects actual inventory. Some NEW and UNIQUE pieces have been added. I will no longer be fulfilling custom metal orders and everything that is in stock is on hanusadesign.com. Once they're gone, they're gone.

Jewelry assembly mode is full steam ahead of @joinmaa.bsky.social Math Fest

More progress...

Some life news: I am planning to step back from Hanusa Design in the coming months. It has been a wonderful ride over the past nine years: learning, growing, and meeting people from around the world who enjoyed my jewelry. As I start my sabbatical year, I want to focus my attention in new ways.

If there is someone out there who is particularly interested in learning about the mathematical jewelry business and wants to work with/own an established brand, I will consider partnerships or a sale. Otherwise, I intend to wind down the retail part of my business by the end of 2026.

Some life news: I am planning to step back from Hanusa Design in the coming months. It has been a wonderful ride over the past nine years: learning, growing, and meeting people from around the world who enjoyed my jewelry. As I start my sabbatical year, I want to focus my attention in new ways.

I am excited to share my collaboration with the gift shop at the New York Hall of Science (@nysci.bsky.social), an amazing science museum located right here in Queens, NY. As of Fall 2025, Hanusa Design owner Christopher hanusa (@mathzorro.bsky.social) is featured as a local artist in the shop!

Many museum shops are run by a giant conglomerate, but not the nysci Science Shop! Through this collaboration I've worked directly with Sanjay, the retail manager, who curates his store with hand-picked gift ideas. You should visit the museum and then stop by the store to see the wide selection.

I am excited to share my collaboration with the gift shop at the New York Hall of Science (@nysci.bsky.social), an amazing science museum located right here in Queens, NY. As of Fall 2025, Hanusa Design owner Christopher hanusa (@mathzorro.bsky.social) is featured as a local artist in the shop!

Forbidden subgraph earrings - wear a theorem on your ears! Kuratowski's theorem says that a graph is planar if and only if it contains neither a K5 nor a K3,3 as a subgraph. Here are those two forbidden subgraphs. Available at hdsn.us/NE230. #MathSky #mathjewelry #gomath

The merkaba has long been a mystic symbol. At its heart is the intersection of two tetrahedra. Here is my take on this classic form, replacing the sharp lines by soft curves. Merkaba Earrings available now: hdsn.us/NE221 #MathSky #mathjewelry #nylonearrings #3dprinted #merkaba #sacredgeometry

Forbidden subgraph earrings - wear a theorem on your ears! Kuratowski's theorem says that a graph is planar if and only if it contains neither a K5 nor a K3,3 as a subgraph. Here are those two forbidden subgraphs. Available at hdsn.us/NE230. #MathSky #mathjewelry #gomath

What great prompts! I have some jewelry that fit many of these words; I'll see if the other topics inspire new pieces. Day 1 of #MathArtMarch is my Circle Around Pendant, featuring circles of circles! hdsn.us/MP414

#MathArtMarch for 3/4/25 (nice numbers btw!) "swirly" ... that made me think of my rotini earrings. (pasta ftw!) Each model swirls to replicate a different mathematical function. From left to right: |x| (x+sin(x)) sawtooth, x^2, x^3, e^x They're so fun! hdsn.us/rotini #MathSky #mathjewelry

What great prompts! I have some jewelry that fit many of these words; I'll see if the other topics inspire new pieces. Day 1 of #MathArtMarch is my Circle Around Pendant, featuring circles of circles! hdsn.us/MP414

And since it's already March 2 in many parts of the world, I'll share mathematical jewelry on a three-dimensional square grid: 3D Plus Earrings, made up of seven cubes. The grid structure provides gives different views from different angles. hdsn.us/NE206 #mathjewelry #MathSky #MathArtMarch

I like dyeing with blue dye because it always feels like playing with a magic eight ball!