Cartesian Ring
Walnut & Carbon
Colour
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Free express shipping worldwide
Our customers enjoy free express delivery without any import duties or taxes! Learn more >
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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 >
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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 warm walnut wood, carbon fibre and stainless steel 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 carbon, carbon fibres and fine-grained walnut wood
Water-resistant thanks to HydroDef Technology
What makes Holzkern special
Excellent customer support
Money-back guarantee
High-quality materials
24-month warranty
Free shipping worldwide
Core Features
Walnut wood
Elegant & durable. The distinctive grain and the diverse range of colours from chocolate brown to almost black brown make this type of wood one of our favourites for the production of watches, jewellery, sunglasses and handbags. Walnut wood also impresses with its high density and the associated stability, which promises your piece of nature a long life!
Walnut wood
Elegant & durable. The distinctive grain and the diverse range of colours from chocolate brown to almost black brown make this type of wood one of our favourites for the production of watches, jewellery, sunglasses and handbags. Walnut wood also impresses with its high density and the associated stability, which promises your piece of nature a long life!
PACKAGE CONTENTS
Your model
Safe-keeping box
Cork holder
Protective padding
THIS IS WHAT HOLZKERN STANDS FOR
Uniquely natural
Nature through and through, that's what our watches & jewellery 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 jewellery are packed in high-quality wooden boxes. In addition, we also rely on recycled paper for delivering to protect your order and do not use plastic tape thanks to our self-adhesive boxes.
Order today, and it's on its way
As soon as you order, your unique piece is already on its way to you. That's 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!
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