At the source
The route begins with a block and its identity. Record the quarry or source, block number, approximate dimensions and material description. Provenance becomes harder to reconstruct once slabs from several blocks share a yard.
Request the documents appropriate to the destination and intended use. Export requirements, product performance requirements and packing rules answer separate questions.
Through processing
Sawing turns the block into a sequence of slabs. Numbering preserves that sequence for a bookmatch or a consistent large surface. Finishing, resin treatment, backing and repair work should be disclosed before acceptance.
Ask for current images of the full lot under consistent light, then a close view of edges and any treatment. An attractive close-up of one slab cannot show the complete range.
Before the doors close
Approve the measurement list and packing list against the slab IDs. Request photographs of the packed bundles, supports, lifting access and container loading. Agree the inspection point, insurance responsibilities and claims process in the contract.
Your freight forwarder and destination adviser should confirm the current shipment and import requirements. Save the lot record with the purchase order so both sides have the same evidence.