Mixed Parcel — A Wholesale Lot of Variable Quality
Mixed Parcel — A Wholesale Lot of Variable Quality
A lot of stones offered as a single unit at a per-carat price reflecting the average across the assortment
A mixed parcel, in the coloured-stone wholesale trade, is a lot of stones offered together at a single per-carat price, with the lot containing material of varying quality, colour, size, or clarity rather than a uniform selection. Mixed parcels are the ordinary unit of trade at the producer-to-cutter and cutter-to-dealer levels for many coloured stones and represent the standard mechanism for moving the full range of a mining operation's output through the supply chain.
How parcels work
A typical mixed parcel might contain, for example, fifty carats of Tanzanian sapphire rough comprising stones from one to five carats individually, with the colour ranging from deep blue through medium blue to light blue, and clarity ranging from eye-clean to noticeably included. The parcel is offered at a single per-carat price that reflects the seller's assessment of the average value of the assortment. The buyer assesses the parcel as a whole, calculating the expected yield of saleable cut stones and the residual value of the lower-grade component, and bids accordingly.
Successful parcel buying is a skill. The buyer must accurately predict cutting yield (often only thirty to forty per cent of rough weight reaches polished form), accurately grade the colour and clarity range, and assess the proportion of the parcel that will produce commercially saleable stones versus the proportion that will produce only break-even or loss material. Experienced parcel buyers maintain detailed records of historical yield and value across many parcels and apply that base to each new offering.
Variations in parcel composition
Parcels vary in deliberate composition. Some parcels are average: a representative sample of a mining run, with the typical distribution of qualities. Some are top-picked: the higher-grade material has been selected out and sold separately, leaving a lower-quality residual that is offered at correspondingly lower per-carat pricing. Some are cull: low-grade material left after multiple selection passes, offered at the lowest per-carat pricing. Honest sellers disclose the composition basis; buyers should ask if not stated.
The buyer's job is to recognise which composition basis applies to a given parcel and to value accordingly. A mixed parcel offered at a per-carat price that would be reasonable for an average-composition lot may be expensive for a cull lot or attractive for a top-picked lot.
The market function
Mixed parcels serve an essential market function in the coloured-stone trade: they allow the full output of a mining operation to move through the supply chain at prices that reflect the realistic distribution of qualities, rather than requiring every stone to be individually graded and priced. The labour and inventory cost of stone-by-stone valuation would be prohibitive for the bulk of trade material, and the parcel mechanism is the trade's solution.
For the very high end — significant single stones — parcel buying gives way to individual stone selection and individual pricing. The transition between parcel-level and stone-level trading occurs at different size and quality thresholds for different species and origins.
In the trade
Skyjems sources principally finished cut stones rather than rough parcels, but the upstream parcel trade is part of how our suppliers acquire material. For dealers operating at the parcel level, the AGTA, ICA, and equivalent trade-association codes apply to honest disclosure of parcel composition. Misrepresenting a cull parcel as average composition, for instance, would be a serious breach of trade practice.