A buyer searching for Crown is usually trying to stop a bad substitute. Jewelry is specified by the metal, the stone treatment, the plating thickness if it is plated, and the hallmark the market requires. The notes below are selection criteria for a Crown. They are not a catalog promise. Confirm every rating on the current datasheet, drawing, or test report for the revision you will receive.
What has to be true of Crown
Jewelry is specified by the metal, the stone treatment, the plating thickness if it is plated, and the hallmark the market requires. For a Crown, start from the duty, then the interface to the rest of the machine or the room, then the document that proves the claim. A lower price that leaves one of those blank is a different product.
Crown is easy to confuse with Ring. If the quote could be read as either, add the line that separates them: the rating, the fitment, or the standard named below. Link the drawing number to that line so receiving inspection can reject the wrong one.
Numbers that change the quote
| Line | What to write for Crown |
|---|---|
| Hallmark | The mark required in the country of sale. |
| Skin contact | Nickel or other limits the market enforces. |
| Metal | Alloy and fineness, or the base metal under a plate. |
| Plating | Metal and thickness, if it is not solid. |
| Stone | Material, size, and whether it is treated. |
| Size | Ring size, length, or the adjustment. |
How to compare two offers
Lay both quotes for Crown on one sheet and line up hallmark, skin contact, and metal. If a cell is empty, the offer is not finished. Ask for the missing line in writing. When those match, the honest difference is lead time, the test evidence, and who carries the warranty. Do not average a fully specified Crown with a cheaper line that omitted hallmark.
Documents worth having before the deposit
Ask for the fineness or plating specification in writing. The file should name Crown and the revision, not only the supplier’s homepage. A factory quality certificate such as ISO 9001 can sit beside that file. It does not replace it.
Failures that show up after delivery
- Describing plated goods as solid.
- Leaving stone treatment undisclosed.
- Ignoring nickel rules.
On a Crown, the expensive version of the first mistake is discovering it after the goods are in the crate. Put the rejection condition in the purchase order while the supplier can still restate the offer.
A worked RFQ line
Use this shape, then replace the brackets with your duty: “Crown — State metal or plating, stone, size, and hallmark.” That sentence is a template, not a rating of any brand. If a supplier’s datasheet uses different units, convert them onto this sheet so the next offer can be compared.
Where words like RoHS / CE belong
Searches often add a constraint to Crown: RoHS / CE, or OEM / custom. Keep those on this page. RoHS is a material limit. CE is a declaration that lists the rules relied on. Ask for the document that names this part number and revision. OEM or custom means a drawing, a revision, and a statement of who owns the tool. Without those, you are buying the catalog part. If you need a third constraint, add it as another line on the same drawing. A second URL that only swaps the adjective does not give a buyer a second fact.
Related in this section: how to specify Ring.
Questions buyers actually ask
What should an RFQ for Crown include?
State metal or plating, stone, size, and hallmark.
Is a cheaper Crown the same part?
Only if hallmark, skin contact, and the documents match. A missing line is a different offer.
Do waterproof, OEM, or IP words need their own page?
No. For Crown they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.