A buyer new to colored stones opened a parcel of sapphires and found three different price tags for stones that looked identical. The difference was not marketing; it was the trade pricing method. Understanding how rough and cut stones are priced in the wholesale market separates a buyer who pays market from a buyer who pays retail wrapped in a trade price. Here is the method, in plain terms.
Price per carat, and why it is not linear
Loose colored stones are quoted per carat, but the per-carat rate is not linear with size. A 2ct sapphire does not cost twice a 1ct sapphire; it often costs three to five times as much, because clean stones above a certain size are rarer. The price-per-carat line jumps at size breakpoints (around 1ct, 2ct, 3ct) the way real-estate prices jump per bedroom. Color, clarity, and cut then multiply that base. The GIA colored-stone grading framework describes the hue-tone-saturation system that drives the multiplier. We cover how rough moves downstream in the mine-to-retail supply chain.
The four pricing levers in a trade offer
When a parcel arrives, the price reflects four levers. First, color: a saturated, even body color commands the top; a windowed or zoned stone drops. Second, clarity: eye-clean stones in corundum are scarce and priced accordingly. Third, cut: a well-proportioned stone that faces up well earns more than a heavy, dull cut the cutter chose to retain weight. Fourth, treatment: heat treatment in corundum is accepted and priced in; fracture filling and dyes are heavily discounted or avoided. Ask the supplier which treatment each lot has; the FTC Jewelry Guides require treatment disclosure to be passed through the chain. The 16 CFR Part 23 guides spell out the disclosure duty. Compare the retail side in how jewelry markup builds from mine to retail.
Parcel pricing vs single-stone pricing
A parcel (a group of matched small stones) is priced as a lot, not per stone, because matching color and size across a strand is the value. Single calibrated stones are priced individually. When a buyer wants consistency for a line of earrings, a matched parcel is cheaper per piece than buying singles. Wholesale buying tips for evaluating parcels are in inspecting gemstone parcels under a lightbox, and for general trade-entry advice see tips for new wholesale jewelry buyers.
A practical negotiating point: trade prices move with rough supply, so lock a price at order time rather than at shipment. Get the per-carat rate, the total carat weight, the treatment note, and the size range in writing. That paperwork is what lets you re-price your own SKUs without guessing.
Why two buyers pay different prices for the "same" stone
The same rough can cut two stones that look alike to a casual eye but carry different per-carat prices because of how they were cut. One cutter retains weight and leaves a deep pavilion, producing a dark, windowed stone; another cuts for face-up color and light return, producing a smaller but brighter stone that earns more per carat. The buyer who understands cut quality pays for the brighter stone; the buyer who buys by carat weight alone ends up with the dark one. Always ask for a face-up photo at 5500K and a measurement of table percentage, rather than a carat weight alone. That is the difference between a trade price and a retail price disguised as trade.
Treatment disclosure as a pricing lever
Heat-treated corundum is priced in. Fracture-filled emerald, dyed chalcedony, and oil-treated stones are discounted heavily and carry resale risk. When a supplier quotes a low price on a "fine" colored stone, ask the treatment question first. The FTC guides require disclosure to travel with the stone, so the buyer who skips the question risks reselling an undisclosed-treated piece in violation of the marking rules. Document the treatment on the invoice; it is the single most important line for re-pricing and for trust.
FAQ: How loose gemstones are priced
Why does a 2ct stone cost more than twice a 1ct stone?
Clean stones get rarer as size rises, so the per-carat rate jumps at size breakpoints rather than scaling linearly.
What drives the price multiplier after size?
Color saturation and evenness first, then clarity, then cut, then treatment status.
Is heat-treated sapphire discounted?
No. Heat treatment in ruby and sapphire is universally accepted and priced into the market. Fracture filling or dyeing is where prices collapse.
Is a matched parcel cheaper than single stones?
Yes, when you need matching color and size across many pieces. The matching itself is the value the lot price buys.
HOLYCOME prices every lot with size, color grade, clarity, and treatment disclosed on the invoice, so you can re-price with confidence. Request a parcel quote for your next line, and read our incoming-inspection checklist before the parcel lands.
Frequently Asked Questions
How is wholesale jewelry priced?
By metal weight plus stone cost plus labor and plating. Ask for a line-by-line quote so you can compare suppliers on the same basis.
Why do two suppliers quote very different prices?
Metal purity, plating thickness, stone grade and QC standard differ. A cheaper quote usually means thinner plating or lower stone clarity.
What volume discount should I expect?
Typically 5–12% from 500 to 2,000 pieces, and better terms on repeat programs. Ask for the tier table before you commit.
What are the payment terms?
30% T/T deposit, 70% against the bill of lading. Sample costs are credited against the bulk order.
