Provenance and Authenticity
Pledge to Our Customers: Authenticity, Provenance, Source
Authenticity is what separates a scientific specimen from an anonymous rock. A specimen's identification, its scientific value, and its standing in the historic record all rest on knowing where exactly the material originated, whether it was legally collected, and how it will be passed from the collection point to our website.
Sources and Provenance
We source all of our scientific material from the private collections of active research scientists and the estates of trusted historic scientific estate collections of explorers and researchers. Material of this caliber rarely reaches the collectors' market, and Jensan Scientifics / Sciencemall-USA maintains strict confidentiality regarding our premier sources—a trusted partnership that allows us to continue to bring these specimens directly to collectors, educators, museums, and research centers.
Chain of Custody
Our accompanying Certificate of Authenticity (COA) serves as our business's legal and professional guarantee of each specimen's absolute authenticity and chain of custody, ensuring you can display your specimen with total confidence. Where a specimen's origin carries legal or permit requirements, we confirm that the material was lawfully collected and lawfully transferred before we offer it.
About the Jensan Scientifics / Sciencemall-USA Collection
Our catalog is built specimen by specimen rather than by the lot. It ranges from deep-ocean drill core to the oldest rocks and the oldest life preserved in rock on Earth, to volcanic, impact, and expedition material tied to specific moments in the history of science. Material from our catalog is purchased by museums, planetariums, educational supply houses, university programs, feature film productions, and international lunar research facilities. Since 1998 — nearly three decades — Jensan Scientifics / Sciencemall-USA has grown into a robust portal for collectors, teachers, academics, and researchers alike. Browse our diverse collection at your leisure and uncover the incredible details of the rocks that make up planet Earth.