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Step one: record the lot at intake
Start by giving the whole parcel an identifier before anyone opens it. Record the supplier, date received, stated weight, stone type, paperwork supplied and the person who checked it in. Example: a dealer receives forty-two sapphires labelled as one lot. At intake the dealer weighs the parcel, photographs the sealed packet, notes that two certificates are included and assigns the code S-0412. Any later disagreement about quantity or weight can then be compared with this first entry. Keep the supplier description separate from your own verified observations so the two are never confused.
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Step two: split the lot and keep the lineage
Next, decide how the parcel will be divided and give each child record a reference that points back to the lot. In the sapphire example, the dealer sorts the stones into three groups by colour and size, then gives each retained stone a code such as S-0412-07. Record individual weight, measurements, treatment notes and any certificate number beside that code. Note which stones are held for auction and which go to retail clients. When a stone is recut or rejected, add a dated entry instead of overwriting the original. The result is a visible lineage from parcel to piece.
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Step three: close the loop at sale
At sale, link the final transaction to the stone record and confirm that paperwork leaves with it. For the sapphire lot, the dealer records buyer, invoice, date, price, certificate copy provided and delivery method for stone S-0412-07. Then the dealer reconciles the lot: stones sold, held, returned or rejected should add up to forty-two. A short review of any gap should happen before the lot is marked closed. This final check protects margin analysis, supports insurance claims and gives future buyers a complete provenance trail they can trust.