Display minerals on matrix
Undamaged crystal terminations preserved directly on host rock. Each piece includes locality documentation, mineral group analysis, and notes on natural contact marks.
Lapidary rough materials
Clean cutting material inspected with immersion oil and transmitted light. We eliminate fractured rind so cutters receive usable yield across agates, jaspers, and beryls.
Authentic prehistoric material
Genuine vertebrate and invertebrate remains including Otodus shark teeth and ammonites. We document any mechanical preparation or matrix consolidation openly.
Four evaluation checkpoints
Loupe examination
Specific gravity check
Matrix stability review
Index registration
We inspect every face under 10x and 30x magnification to confirm natural terminations, identify contact points, and detect artificial color coatings or synthetic stabilization.
Hydrostatic balance testing verifies density against mineralogical tables, distinguishing genuine crystalline species from mislabeled trade material or dyed substitutes.
Host rock undergoes gentle structural handling tests to verify solid adhesion, ensuring display pieces survive postal transit without spontaneous shedding.
We draft an archival specimen card recording Dana classification, verified pit or quarry locality, and physical hardness measurements before packing.
Reserve unlisted bench material
Seeking a specific crystal habit, uncut facet parcel, or curated classroom set with Mohs tools? Message our field desk directly with your parameters.