TOP GEO: Geological Gems of Top-Tier Quality.
Our Name is our Mission
An uncompromising passion for geology, rare stones, and paleontology has been the heart of TOP GEO Mineralienhandel GmbH since 1991.
While that may be just the blink of an eye in geologic time, for us it represents over 30 years of proud company history. Our story began in Stuttgart, Germany, as a wholesaler for minerals, fossils, and gemstones. This was when our founder, the geologist and passionate collector Dr. Petr Zajicek, turned his vocation into his profession.
He has been the company's bedrock ever since, serving as the owner and managing director of TOP GEO to this day—and he is always happy to advise you personally.
From the Garage to the Treasure Trove
Yes, the garage is still there. Like many successful companies, our beginnings were humble when we moved into our own premises in Satteldorf, between Stuttgart and Nuremberg, in 1994. We have steadily expanded and professionalized ever since, all without losing that original spirit. We believe in sustainable quality, in-depth knowledge, and long-term customer satisfaction.
Our roots are in the wholesale trade, where we maintain trusting relationships, often built over decades. We have long since opened our selection to private customers as well, evolving into a sought-after specialty shop for minerals, fossils, and prehistoric artifacts. We deeply appreciate that passionate collectors, resellers, and renowned museums from all over the world find what they are looking for with us. To provide this level of service, we now import directly from over 40 countries and export to more than 100.
In parallel, we have earned an international reputation as a supplier for geological equipment and stone-working machinery. We reliably equip everyone from hobby geologists needing their first field kit to entire university institutes.
To us, our warehouse isn't just a warehouse—it’s a treasure trove. Every single piece you see here has passed through our hands, selected with the meticulous care of a collector.
This daily fascination with the forms, colors, and history of these stones is our driving force. We don't just sell products; we share a passion that has captivated us for decades.
A Warm Welcome to Our Showroom
We cordially invite you to discover our "treasure trove" in person! With over 1,000 square meters (approx. 10,700 sq ft) of exhibition and warehouse space, there is so much to explore. We are located between Stuttgart and Nuremberg, at the A6/A7 motorway junction near Crailsheim—just a stone's throw from Rothenburg ob der Tauber, Dinkelsbühl, and Schwäbisch Hall.
By appointment, we are happy to open our doors for you during standard business hours. Groups and school classes are also warmly welcome.
Please note that we are not a traditional retail shop with fixed opening hours.
The Mineralogical Depot
What you see online is only a small fraction of our stocks (like the outcrop of a much larger deposit). Our actual collection—much like a museum depot—comprises over 40,000 minerals, covering a wide mineralogical spectrum.
We are the premier contact for the extraordinary: from museum-grade exhibits and systematic minerals to rarities, voucher specimens, and micromounts. We also equip schools and universities, whether with complete study collections, custom-made hardness scales, or minerals for specific research purposes.
The Paleontological Archive
What holds true for our minerals, we continue with our fossils: Our warehouse is akin to a paleontological archive. Over 15,000 exhibits are cataloged here, ranging from spectacular showpiece fossils to voucher specimens for systematic classification.
Here, too, we design complex collections for educational use in schools and universities. A particular highlight is our collection of continental Devonian fossils from Čelechovice (Moravia), which is regarded as one of the most comprehensive of its kind in the world.
Making Preistory Tangible
We bring the earliest testaments of art history into your home as faithful replicas. The spectrum of our in-house plaster casting workshop ranges from the icons of the Ice Age—like the "Venus of Willendorf" and the "Lion-man"—through animal depictions, all the way to objects from the Middle Ages.
Our selection is rounded out by scientific casts of famous fossils and hominids. In this way, the past is brought to life for collectors, museums, and educational purposes.
True Beauty Comes from Within
We live by this philosophy—in the most literal sense. The fascinating beauty of rocks and crystals, hidden deep within the Earth, is transformed into exquisite jewelry in our in-house workshop.
You don't have to be a geologist to love beautiful stones. Our collections include popular classic gems set in gold and silver, but also plenty of surprising and rare finds. This includes exclusive pieces made with our own field-collected materials, like the mysterious Libyan Desert Glass. This material was incorporated into ancient Egyptian amulets (though not by us, of course) and is known today only among connoisseurs.
Since we operate directly as the manufacturer, you are assured of both quality and value. And naturally, our obsession with detail is evident here, too: even our tumbled stone pendants are set with genuine 925 sterling silver bails and are individually photographed for the online shop.
In our selection of decorative objects, you will find everything to beautify your space—from artful gemstone engravings and semi-precious stone spheres to a larger-than-life amethyst geode as the ultimate centerpiece.
Tools We Use Ourselves
As practicing geologists, preparators, and jewelry makers, we know exactly what matters when it comes to equipment.
That is why you will only find geological tools and stone-working accessories that we personally use and are fully convinced of. From geologist's hammers to abrasives, we only sell what we can recommend from our own hands-on experience.
For Retailers and Bulk Buyers
Our wholesale business is the foundation of our global network. For our B2B partners, we move material on every scale: minerals and fossils by the box, by the kilo, or by the ton.
Our in-stock assortment also includes a huge selection of tumbled stones and a seemingly inexhaustible variety of rough stones.
Our Collections
Our passion for geology extends far beyond mere commerce—we want to share it. That is why we have built our own museum to bring the fascination for the Earth's treasures to life.
Here, a curated collection awaits you, featuring over 5,000 mineral exhibits and 3,000 fossil exhibits that we have gathered over decades. It is important to us to place these items in a larger context. Original oil paintings by P. Modlitba guide you on a journey through human evolution, while a display of historical oil, carbide, and petrol lamps illustrates a piece of mining history.
Our greatest pride, and the absolute heart of the exhibition, is among the world's largest private collections of minerals from the classic Czech mining district of Příbram.
From Find to Exhibit
In our workshop, a raw find is transformed into a collection-worthy exhibit. We handle the professional preparation and trimming of minerals and fossils—both for our own inventory and by direct commission from clients.
To do this, we rely on professional techniques that require a delicate touch: from ultrasonic and chemical cleaning to micro-sandblasting with a fineness of 40µm, allowing us to gently expose even the most delicate structures.
Hands and Heart on Stone
This is where the magic happens—in our lapidary workshop. Here, a rough stone is transformed into a showpiece. And when the weather is fine, we sometimes even move our craft outdoors. Have you discovered our hand-polished stones yet? They offer an elegant alternative to mass-produced tumbled stones.
Our workshop is equipped for every step: from rough sawing and trimming to polishing, tumbling, and even high-precision ultrasonic drilling. A special field we are also dedicated to is the growth of synthetic crystals. However, this delicate process can only succeed indoors, under strictly controlled environmental conditions.
In the Field: Our Expeditions
Our own expeditions and collecting tours are more than just a diversion. We bring back very special finds from our travels, from dendrites from the nearby Solnhofen Plattenkalk to the legendary Desert Glass from the Sahara.
Our commitment is, in the truest sense of the word, an "up and down": One moment we are exploring the W-Sn district on Mount Viloco in Bolivia at an airy altitude of 5,000 meters (approx. 16,400 ft) (see image left), and the next, we head underground, as we did in the summer of 2025 in a Tansanite mine in Tanzania.
As you can see: Stones are our great passion—and we are delighted to share both with you!
Glück Auf!
