Verified from
source to sole
At the heart of every CTRNE sneaker is genuine citrine, responsibly sourced and ethically mined before being integrated into the sole. But for CTRNE, simply being told it was citrine wasn't enough.
Citrine beneath your feet. Abundance in every step.
Independently tested.
The citrine selected for our footwear has undergone independent gemological testing by the NGTC (National Gemstone Testing Center). The testing certificate identifies the submitted material as Citrine, recording its physical characteristics and internal features, including mineral and gas-liquid inclusions.
This independent testing provides scientific verification of the material at the centre of the CTRNE concept, complementing our commitment to sourcing our citrine responsibly and with consideration for the people and environments connected to its journey.
Every pair then carries this citrine within its sole. Not simply as a decorative detail, but as an intrinsic part of the sneaker and the philosophy behind it.
Patented innovation. Distinctly CTRNE.
The integration of citrine into a CTRNE sneaker isn't an afterthought. It is a patented innovation developed specifically around the idea of bringing genuine crystal into the construction of footwear.
That intellectual property forms part of a growing international protection strategy, with further patent applications progressing across key global markets.
It means the detail hidden beneath every step is more than a signature of CTRNE. It is an innovation we created, developed and took the steps to protect.
Step into abundance.
Citrine has long been associated with abundance, confidence, optimism and prosperity. We took that symbolism and gave it somewhere new to live: beneath your feet.
From independently tested citrine and responsible sourcing to patented product innovation and protected brand identity, every element has been considered with purpose.
This isn't crystal-inspired footwear. This is CTRNE.
Step into abundance.
Independently tested citrine, responsibly sourced, set into a patented sole. Every element considered with purpose.