Cartesian Ring
Maple & Blue
-
Free shipping worldwide
Our customers enjoy free delivery without any import duties or taxes! Learn more>
-
24 months warranty
If you find a defect in your model, please contact our customer support and we’ll find the best solution for you. Learn more>
-
24-day refund policy
You are free to return your model within the 24-day period. Learn more >
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!
Technical details
Width: 8mm
Ring size: Available in a range of sizes
Material: 316L stainless steel in blue, black colored maple wood and cork
Water-resistant thanks to HydroDef Technology
What makes Holzkern special
Core Features

maple wood
maple wood gives our watches, jewelry and accessories natural elegance with a regional character. We like to dye the light-colored, fine-grained wood to further emphasize its unique charm and make each piece an individual work of art. Each piece as unique as you are!
PACKAGE CONTENTS
THIS IS WHAT HOLZKERN STANDS FOR

Uniquely natural
Nature through and through, that's what our watches & pieces of jewelry stand for. The unique structures of wood and stone make your Holzkern product truly one of a kind.

The Holzkern family
With your purchase at Holzkern, you are supporting a young start-up that was founded as a family business in Upper Austria in 2015.

Sustainably packaged
Our watches, bandlets and jewelry are packed in high-quality wooden boxes. We also use recycled paper to protect your order during shipping and, thanks to our self-adhesive boxes, we don't use plastic tape.

Order today, already on its way
As soon as you order, your unique piece will be on its way to you. Is that too fast for you? No problem, after receiving your goods you have 24 days to change your mind if you don't like them 100%.
"With Holzkern, I always want to express my love of nature and have set myself the goal of creating the perfect piece of nature for everyone."

Elias Ferihumer
Founder of Holzkern
Hello Nature-Lover!
Sign in or create a free-of-charge Premium Club account, automatically collect points for every purchase and experience all the great benefits at the World of Holzkern. Learn more