A Product From the Earth
For the Earth.
For millions of years, molten igneous rock has surfaced from deep within the Earth at 1100° eventually cooling and solidifying. In its hardened form, it carries a rich array of chemical and mineral elements, providing the perfect raw material for a high-performance fiber —a remarkable gift from nature to the planet and humanity.
And while the promise of igneous rock based fiber has been demonstrated for decades, production - at the quality and scale required for wide range use - has proven difficult until now.
Fueled by innovation and a commitment to sustainability, Rock Fiber Inc. (RFI) is advancing proven technologies to melt and blend rock in a new way. Our groundbreaking approach harnesses the full strength and durability of igneous rocks like basalt and andesite, transforming them into a new class of high-performance, environmentally friendly fibers for advanced structural composites.
Unearthing the power of one of nature’s most abundant gifts, we are contributing to a greener, stronger, and more resilient future for all.

A new class of superior and cost-effective fiber for composites.
Through our ground-breaking proprietary induction process we are developing a new, stronger and more durable fiber to be used in composites.
Made solely from igneous rock and manufactured with near zero emissions, Rockfiber™ is the key to decarbonizing the built world.