A practical sourcing guide for importers buying Chinese seal stones in bulk. Covers Shoushan stone grades, the testing and origin documents to request per shipment, and a step-by-step bulk order checklist to reduce risk and align expectations with your supplier.
Importer Buying Checklist
Search volumes for chinese seal stone cluster around material and grade questions: importers want to know what Shoushan stone actually is, how grades differ, what paperwork should accompany a shipment, and how to structure a bulk order without surprises. This guide answers those questions from a supplier-document perspective.
What this article covers
- Why Shoushan stone is graded, not just sized
- Documents to request per shipment
- Bulk order checklist, step by step
- Standard stock vs. custom sizes
- Sourcing tiers: premium vs. practice grade
- FAQ for first-time importers
Why Shoushan Stone Is Graded, Not Just Sized
Shoushan stone is a natural material, and two pieces cut to the same 3x3x8cm block can behave differently under a carving tool. For importers, that means a specification sheet listing only dimensions is not enough. The Premium Shoushan Seal Stone (SKU GMO-SC-001) is supplied with per-stone structural integrity testing, grain grading, and color evaluation, with results recorded rather than summarized as a single quality claim.
Three product facts matter at the sourcing stage:
- Origin. The stone is natural Shoushan stone from verified quarry sources, and origin is documented. Ask for the origin certificate that travels with the shipment, not a generic statement in a catalog.
- Grain. Fine grain determines how much detail a carver can cut. Grain grading per stone tells your buyers what to expect from a given batch, which matters if you resell to carving studios or gift channels with different price points.
- Color. Color evaluation is recorded per stone. Natural stone varies, so the evaluation record is what lets you set expectations for a retail or wholesale listing before the goods arrive.
Standard sizes run 3x3x8cm to 5x5x12cm. That range covers most desk seals and presentation seals. Sizes outside the standard range are possible as custom work, with a lead time of 35–50 days; the exact feasibility and tolerance for a given custom dimension should be confirmed with the supplier before you commit to a purchase order.
Documents to Request Per Shipment
Whether you are buying 50 pieces or filling a container, the document set is where an importer's risk sits. For this product, two document types are part of the offer: origin certificates and quality grading records per shipment. The practical checklist below expands that into a request list you can send to any supplier, including us.
| Document | What it should tell you | Why the importer needs it |
|---|---|---|
| Origin certificate | Verified quarry source for the stone in the shipment | Supports customs clearance conversations and backs any origin claim you make to your own buyers |
| Quality grading record | Per-stone grain grade, color evaluation, and structural integrity test result | Lets you sort stock into price tiers before listing and gives a documented basis if a buyer questions a piece |
| Packing list | Piece count by size, boxed or bulk | Reconcile at receiving; confirm whether presentation boxes are included per unit |
| Commercial invoice and packing declaration | Declared value, HS classification, gross/net weight | Standard customs requirement; classification should be confirmed with the supplier and your broker |
If a supplier cannot provide an origin certificate or a per-stone grading record for a natural-stone product, that is a signal about how the stone was sourced, not just about paperwork. For any document you are unsure about — for example, whether a specific test report can be issued for your batch — the answer should come from the supplier in writing before the deposit is paid.
Bulk Order Checklist
The steps below are ordered the way a purchase actually moves: sample, confirm, produce, ship. Each step has a concrete deliverable, which is what makes it useful when you are comparing suppliers.
- Request a sample set, not a single sample. Ask for stones from the standard size range you intend to order. If your range includes a custom dimension, request a sample at or near that dimension so you can judge grain and color on comparable material.
- Review the grading record alongside the sample. Compare the recorded grain grade and color evaluation with what you see and feel. This is where you calibrate how the supplier's grading language maps to your market's expectations.
- Confirm sizes and order quantity. Standard sizes run 3x3x8cm to 5x5x12cm with an MOQ of 50 pieces. Custom sizes beyond the standard range take 35–50 days. Confirm both points in writing before deposit.
- Approve a production sample if you are ordering custom. For custom work, the lead time of 30–45 days runs after sample approval, so the approval step sets your delivery date.
- Lock in trade terms. The product is quoted FOB, CIF, or DDP; confirm which term your quote reflects, since the term determines who arranges freight and insurance.
- Decide on presentation packaging. A custom presentation box is available. If you sell to gift channels, confirm box specifications, whether they are packed per unit, and how that affects carton dimensions and freight.
- Request the document set against the shipment. Origin certificates and quality grading records are issued per shipment. Ask for electronic copies before dispatch so you can review them and forward to your customs broker.
- Reconcile on arrival. Check piece count against the packing list and spot-check grading records against the stones received. Report discrepancies within the window your purchase terms allow.
Key takeaway: For natural stone, the grade record is the product. A supplier who documents per-stone structural integrity, grain, and color, and issues origin certificates per shipment, gives you a basis to price and defend the goods after they arrive. That documentation is worth more than a broad quality claim in a catalog.
Standard Stock vs. Custom Sizes
Most importers start with standard dimensions because they ship fastest and the grade record is already established for the production run. Custom sizes extend your product range but add planning time.
| Factor | Standard size order | Custom size order |
|---|---|---|
| Size range | 3x3x8cm to 5x5x12cm | Beyond standard range, subject to supplier confirmation |
| MOQ | 50 pieces | Confirm with the supplier; may differ from standard MOQ |
| Lead time | 30–45 days after sample approval | 35–50 days for the custom work itself, plus lead time after sample approval |
| Sampling | Sample set drawn from standard range | Sample at or near the target dimension |
If your market needs both, the practical approach is to open the account with a standard-size order and add custom dimensions once you have seen the grading records and know how your buyers respond to the material.
Choosing Between Premium and Practice Grade
Not every buyer needs premium stone. The Premium Shoushan Seal Stone is aimed at carving studios, collectors, and gift channels where grain quality and presentation matter. For beginner and practice use — classrooms, starter kits, high-volume promotional lines — the Practice Seal Stone (SKU GMO-SC-004) offers 2x2x6cm practice-grade stones, hardness-graded for beginners, with a lower MOQ of 200 pieces and a lead time of 25–35 days.
Mixing both tiers in one supplier relationship is common: practice stones for volume channels and premium stones for the higher-margin lines. When you order both, ask for the grading records for each SKU separately so your stock records stay clean.
FAQ for First-Time Importers
What is the MOQ for Shoushan seal stone?
The Premium Shoushan Seal Stone has an MOQ of 50 pieces. The Practice Seal Stone has an MOQ of 200 pieces. Custom size orders may have different MOQ terms — confirm with the supplier.
How long does production take?
Standard premium orders ship in 30–45 days after sample approval. Custom sizes take 35–50 days for the custom work itself, on top of the post-approval lead time. Practice stones take 25–35 days.
What documents come with a shipment?
Origin certificates and quality grading records are issued per shipment. The grading record covers per-stone structural integrity testing, grain grading, and color evaluation. Commercial invoice and packing documents are standard. If you need any additional certificate for your market, ask the supplier before ordering.
Can I get a presentation box?
Yes, a custom presentation box is available. Confirm box specifications and packing details with the supplier, since packaging affects carton dimensions and freight calculation.
Are the stones uniform in color and grain?
Shoushan stone is natural, so variation between pieces is expected. The per-stone grading record is what tells you the actual grade of the pieces in your shipment rather than an average figure.
Which trade terms are available?
FOB, CIF, and DDP are quoted by request. Confirm which term applies to your quote before comparing prices between suppliers.
Gu Mo Craft Technology has supplied carvers, collectors, gift wholesalers, and cultural institutions across export markets since 2011. If you are sourcing chinese seal stone in bulk, start with a sample set and a copy of the grading record format so you can judge the material against your own market. Send us your target sizes, quantity, and destination, and we will confirm pricing, lead time, and the documents that travel with your shipment.