Cartesian Ring (Maple/Blue)
Genuine maple makes every Cartesian Ring a striking one-of-a-kind with its very own grain.
Made from genuine natural materials, with unique variations in color and texture.
Free shipping including trackingOur customers benefit from fast and free shipping. More information >
24-month warrantyDuring the first 24 months, we take care of any issues that arise through normal use. Learn more >
Free 24-day return | Club accountClub membership is 100% free – members receive a prepaid return label at no extra cost. Even without an account, you can return within 24 days, with a small label fee. Here.
Packaged as a gift?
Description
The visual representation in the coordinate system is a good aid for complex mathematical problems and turns confusing puzzles into solvable challenges.
Stay on top of any challenge with your "Cartesian" ring! The combination of black colored maple wood, cork and stainless steel in blue is guaranteed to be waterproof and is the perfect complement to any outfit. With your "Cartesian" you'll surely be ready for any challenge you may face in life!
Details
| Ring width | 8 mm |
|---|---|
| Ring size | Available in various sizes |
| Material | 316L stainless steel in blue, maple wood in black and cork |
What's included
Your model
Storage box
Cork holder
Protective packaging
Core features
Where nature meets craftsmanship
Every HOLZKERN piece begins with genuine natural materials from the forests, mountains, and oceans of our planet. With precision, experience, and innovative technology, we preserve nature's unique character and make it wearable every day. The result: accessories that are as individual as you are and remind you of your uniqueness for years to come.
Before it is packaged and shipped, each piece is individually inspected to ensure that it truly meets our high quality standards.
If it passes the test, we’ll package it carefully, securely, and as plastic-free as possible. We include tools and replacement links with watches and Bandlets so you can adjust your product to your size right away at home.
Just a few days later, you’ll be overjoyed to find your package waiting on your doorstep! Unpack it quickly and try it on—you can test your items for 24 days and simply send them back if you’re not satisfied.
If you have any questions or issues, you can reach us through our service form. No waiting on hold or automated responses—our customer support team consists of 15 employees who are always committed to ensuring your satisfaction.
“With Holzkern I always want to express my love for nature and have set myself the goal of creating the perfect piece of nature for everyone.”
