| Grade | Score | Description | Price Range |
|---|---|---|---|
| Museum Grade | 90-100 | Exceptional quality, museum-worthy pieces | $100,000+ |
| Collection Grade | 80-89 | High quality, suitable for serious collectors | $10,000-$100,000 |
| Fine Grade | 70-79 | Above average quality with good characteristics | $1,000-$10,000 |
| Standard Grade | 50-69 | Average quality, suitable for daily wear | $100-$1,000 |
| Basic Grade | Below 50 | Basic quality, decorative purpose | Under $100 |