Expert Minerals

At Catawiki, every day brings the extraordinary! We're a one-of-a-kind marketplace for buying and selling special objects. Each week, more than 100,000 unique items are auctioned, all carefully curated by our passionate in-house experts.

As a Minerals Expert within the Natural History & Finds category, part of the Collectables Supercluster, you will strengthen the quality and commercial performance of our Minerals auctions. You will use your specialist knowledge to curate authentic, attractive specimens, deliver a transparent auction experience, and drive buyer engagement.

What You'll Do

• Curate high-quality Minerals auctions by evaluating specimens for authenticity, rarity, quality, and commercial appeal, ensuring accurate descriptions, strong photography, and realistic estimates.
• Drive commercial performance through informed curation decisions, competitive pricing, and the identification of valuable specimens and emerging market opportunities.
• Expand and diversify our seller base by partnering with Sales and Business Development to recruit new sellers, reactivate inactive sellers, and develop supply across new regions.
• Leverage your industry network to build relationships with miners, dealers, collectors, and specialist suppliers, unlocking new sources of supply and commercial opportunities.
• Lead category initiatives including special auctions, targeted seller activations, supply expansion projects, and cross-category opportunities within Natural History & Finds.
• Shape category strategy by using market insights, auction data, and specialist knowledge to identify growth opportunities and improve curation standards and processes.
• Collaborate across teams to support auction visibility, attract bidders, share expertise, and maintain professional relationships with sellers and internal stakeholders.

What You'll Bring

• Deep expertise in Minerals, including mineralogy, geological contexts, specimen quality, rarity, authenticity, pricing, and market values.
• At least 5 years of professional experience in the Minerals trade, whether as a dealer, curator, collector, academic specialist, or commercial expert.
• An established industry network of Mineral dealers, miners, collectors, and specialist suppliers, with the ability to identify and develop new sources of supply.
• Strong commercial judgement, with experience in seller engagement, deal-making, auctions, or marketplaces, alongside an understanding of online buyer behaviour and curation best practices.
• An independent, proactive approach, with the ability to lead projects, identify opportunities, and contribute to shared category goals.
• Strong communication and collaboration skills, including the ability to work across teams, build professional relationships, and resolve disputes constructively.
• Good digital literacy and fluency in English, with the ability to work in a fast-paced online environment. Additional languages and knowledge of Fossils, Meteorites, or other Natural History fields are an advantage.

How We Work

• Work remotely as part of the Natural History & Finds category within the wider Collectables Supercluster.
• Collaborate closely with fellow Experts, Account Managers, Business Development, Marketing, and the Category Lead to achieve shared commercial and category goals.
• Take ownership of projects and initiatives while contributing to improvements in team processes, curation standards, and ways of working.
• Share specialist knowledge and market insights across Minerals, Fossils, Meteorites, and Archaeological Finds to support cross-category opportunities.

Why You'll Love Working with Us

• Create a visible impact by working at scale in a global organisation serving millions of customers across 80+ categories.
• Learn and grow through our Learning & Development initiatives, including clear development plans and mentorship programmes to support your career progression.
• A culture of connection defines us. We're a passionate, diverse team of 800+ Catawikians representing 60+ nationalities.
• Celebrate life's moments with us. You'll receive a €100 Catavoucher when you join, a €50 Catavoucher on your birthday, and an extra day off each year to 'Pursue Your Passion'.