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Cartesian Ring

Walnut & Carbon

US$99

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More than 1,000,000 happy customers worldwide

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Free shipping within the US 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 warm walnut wood, carbon fiber 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!

EAN: # cartesianring4

Technical details

Width: 8mm

Ring size: Available in a range of sizes

Material: 316L stainless steel in carbon, carbon fibers 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 colors from chocolate brown to almost black brown make this type of wood one of our favorites for the production of watches, jewelry, 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

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 & 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%.