Ask anyone running a diamond or jewellery operation where their system hurts most, and the answer is rarely accounting. It is job work: the material issued to karigars and outside processes, which leaves your premises, changes form and weight, and returns days or weeks later.
Why generic inventory modules break here
A standard inventory module assumes quantity is conserved. You issue ten units, you receive ten units back, possibly with some scrap. In this industry the material transforms: rough becomes polished, gross weight becomes net weight, carats become pieces. Loss at each stage is expected — the question is whether it is within tolerance for that process, that party and that lot.
- Weight in and weight out captured at every process stage, not just at the ends
- Wastage allowance defined per process and per party, and compared against actual
- Multi-unit conversion — carat, gram, piece — with rounding rules the finance team agrees to
- Ageing on outstanding goods, so nothing quietly sits with a party for eight months
- Party-wise reconciliation that stands up when there is a disagreement
The reconciliation conversation
The real test of a job work module is not the report. It is what happens when you and a karigar disagree about what went out and what came back. If the system can show issue, receipt, expected wastage and actual, lot by lot, the conversation takes ten minutes. If it cannot, it takes a week and damages a relationship you rely on.
The system has to be trusted by both sides of the transaction, or it does not get used by either.
Certification and the paper trail
On top of the material flow sits a compliance chain: GIA and IGI certificates, HUID hallmarking, and responsible-sourcing evidence for RJC. Each of those has to attach to the right stone or piece and stay attached through processing and sale. Bolted on afterwards, it becomes a parallel filing system. Built into the lot record, it becomes free.
We did not design this from a requirements document. It is how our own group has run since 1987, and the module exists because we needed it before anyone asked us to sell it.