2023 — The Spark
Our story began long before Bloomineral officially existed. For over a decade, Caroline Thaler had been studying how living organisms transform CO₂ into stone; exploring the biogeochemical processes that regulate Earth’s carbon cycle.
In 2023, that scientific foundation evolved into a tangible venture. Within Marble, a Paris-based startup studio dedicated to climate deeptech, she began exploring how biomineralization and alkalinity, the mechanisms behind Earth’s natural carbon pump, could be harnessed for industrial use and large-scale climate impact. The idea evolved from research to application as she identified high-value applications across multiple industries (talking with cement players such as Holcim and Vinci), validated the techno-economic model, and built a clear roadmap to scale. What began as science became an operational venture, still supported today by Marble’s guidance and network.
2024 — From Concept to Company
In 2024, our work moved from a validated concept to an experiment.
Our founder, Dr. Caroline Thaler, assembled a small, multidisciplinary team across biogeochemistry, engineering, and strategy. We joined the Laboratoire des Sciences du Climat et de l’Environnement (LSCE), one of the world’s leading centers for climate science, and began producing the first grams of carbon-negative calcium carbonate.
That same year, we proved our organisms (we call them “Bloomies”) could capture and mineralize CO₂ efficiently under lab conditions.
2025 — Proof of Concept
This year, we expanded our lab operations and began integrating biological and industrial systems. We’re producing measurable CO₂ capture through our biomineralization process and testing our crystalline powder with partners in the construction and cosmetics industry.
Our focus is now on validation through life-cycle assessment, monitoring, and collaboration, to show that our process can deliver permanent, verifiable carbon storage while improving material performance.
2026 — Scaling Up (upcoming)
Next, we’re moving from lab to pilot, scaling production from grams to hundreds of kilograms and eventually tonnes.
Our goal is to demonstrate the process in real-world conditions, and launch co-R&D collaborations with leading industrial partners, culminating in the sale of our first tons of biominerals. Industrial partnerships are already in advanced stages of discussion.