Natural Stone Entrepreneur

Raif Umut Yeşiltan

Natural stone entrepreneur & founder with 25+ years of global experience across quarrying, production, sourcing, quality control and project delivery. Based in Spain, working globally with an active presence across major stone markets. Founder of Inspectstone, StoneStocks, Piedras de Esperanza, Mesa de Esperanza and Trustum Dış Ticaret.

About

I am a natural stone entrepreneur with over two decades of experience covering the full vertical of the industry — quarrying, factory production, international trading, independent inspections and large-scale project supply. I founded Inspectstone, StoneStocks, Piedras de Esperanza, Mesa de Esperanza and Trustum Dis Ticaret, and previously completed a successful exit from another stone venture.

My work is international, supporting partners and projects across different regions and markets. A large part of my operational background comes from Turkey, where I maintain long-standing relationships with leading factories, quarries and suppliers. Over the years, I have built one of the most comprehensive private networks of producers, warehouses and buyers in the sector, which today supports the intelligence and sourcing capabilities behind my companies.

In addition to leading my businesses, I advise selected partners, projects and factories on sourcing strategy, production processes, quality systems and risk management.

What I Do Now

Inspectstone – Global supply & independent inspections

Founder & Director

Inspectstone provides reliable stone sourcing and independent quality inspections, working directly with leading factories and quarries in Turkey and other key producing regions. Export operations from Turkey are managed through Trustum Dış Ticaret.

StoneStocks – AI-driven stone stock intelligence

Founder

StoneStocks is my long-term career project — an AI-supported system built to modernise how the industry works with slab inventories. Development began in 2015 and has grown through advanced back-office tools, visual search, bots, data processing and years of internal testing.

Piedras de Esperanza & Mesa de Esperanza – Natural stone & stone tables (Spain)

Founder

In Spain, we provide natural stone solutions — slabs, tiles, pavers, exterior materials, kitchen worktops and custom stone tables.

Advisory Work

I advise companies on:

My Journey in Stone

2001 — Began working in natural stone in Turkey.
2004 — Founded Inspectstone.
2000s–2020s — Active in quarrying and trading ventures: Stone Empire Co., (joint venture) , TR Marble Ltd, Trustum Dis Ticaret, Better Hope Company (Spain)
2015 — Began long-term development of StoneStocks.
2022 Spain — Established Piedras de Esperanza and Mesa de Esperanza.

Contact

Email: hello@umutyesiltan.com

Location: Spain