Binomial Ring
Sodalite & Silver
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Free delivery with tracking number
Our UK customers enjoy free 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. For our Premium Club members, we also cover the return shipping costs and provide a prepaid return label. Learn more >
DESCRIPTION
A binomial is simply the sum or the difference between two parts, for example a+b or a-b. The binomial formulas (a+b)2 and (a-b)2 are derived from this.
Our “Binomial” signet ring is crafted from high-quality 316L stainless steel in silver and the rare and fascinating mineral sodalite. With sodalite, did you know that both fluorescence and phosphorescence is possible under UV light? Discover your new daily companion and wear your own personal piece of raw nature by your side!
Technical details
Width: 12mm
Ring size: Available in a range of sizes (see size chart)
Material: 316L stainless steel in silver and genuine blue sodalite gemstone
Waterproof
What makes Holzkern special
Excellent customer support
Money-back guarantee
High-quality materials
24-month warranty
Free shipping worldwide
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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