A vibrant start

It all started in 2008 when Eddy Wijnker (then working as a sound engineer) came into contact with the rock Olivine during an earthquake.

"In 2008 I lived and worked for my previous company in China. On May 12th we were hit by a strong, shallow earthquake where I saw green colored stones rolling down the slope. Curious as I am, I picked up a few. was the mineral Olivine told my colleague, which captures CO₂ when in contact with rainwater." - Eddie Winker

From soundman to sandman

Back in the Netherlands, Eddy came into contact with Professor Olaf Schuiling, emeritus professor of geochemistry at the University of Utrecht and Delft. Olaf told Eddy everything about how the mineral works and why Olivine is the key to climate change.

"I trust science and my gut. And I was convinced. I used to be a hippie in the sound world who claimed to save the world. At the age of 60 I put my career in sound and decided to put my words to fulfill." - Eddie Winker


Inspired by the natural simplicity with which the mineral Olivine cleans up CO₂ and the increasing urgency of the climate problem, Eddy Wijnker founded greenSand in 2009.

"The earth has the solution to the climate problem. Together we just have to give it more surface area. With greenSand I want to give everyone the chance to help the earth save itself. Together we will combat climate change" Eddy Wijnker

The hourglass

The hourglass has the meaning of a ticking clock. Time is running out. The fact that something needs to be done is becoming increasingly clear year after year. But that time is also running out, that realization is less strong.

"I used to go to primary school called "The hourglass". Thinking back to the past and the urgency of the climate problem, the hourglass was an ideal logo for greenSand." - Eddy Wijnker.

Now is the time

You've probably heard it before: there is no planet B. It's a fact. We must all act now or it will be too late. Think about the future of the generations after us. Think about the future of our planet. Will you also contribute?

This is how you can help:

Clean up your own CO₂

Help the earth and create more surface. Discover all products and applications.

Offset your CO₂

We spread the greenSand Olivine for you. Together we can create more surface area.

Become a co-owner

Become part of the solution. Become a co-owner of greenSand from €15.