Glossary · Fine Jewelry
The 4 Cs
The 4 Cs are the four attributes a diamond grading report records: carat weight, colour, clarity and cut. They are the trade’s common vocabulary rather than a single quality score — a report states what one laboratory observed under its own standards. Grades are comparable only within a lab’s own system, so a colour or clarity grade means little until you know which lab issued the report.
Related terms
The short list
Three entries from the ledger — the full ranking lives on the best-of pages.
Disclosure —some links on this page are affiliate links: if you buy through them we may earn a commission from the retailer or network (such as eBay Partner Network, Awin or CJ), at no extra cost to you. It never changes the price you pay and it never changes a verdict. We buy nothing, we accept no gifted product, and we are not affiliated with any brand we cover. Where a programme has not been approved yet, we say so instead of linking.
- Check price at eBay
Pre-owned Hermès Birkin on eBay
- Check price at eBay
Pre-owned Louis Vuitton Neverfull on eBay
- Check price at eBay
Pre-owned Cartier Love bracelet on eBay
35 pieces published
13 brands tracked