## Common ground
All options describe coffee or tea sets made from different materials.
## Options at a glance
**6911.10 – Porcelain or china**
- **Defining trait:** Made from fine, vitrified clay with a smooth, white, translucent appearance.
- **Typical examples:** Bone china teacups, porcelain serving trays.
- **Best fit when:** The set is lightweight, delicate, and has a refined, glossy finish.
**6912.00 – Ceramic**
- **Defining trait:** Made from fired clay, typically less refined than porcelain; may be opaque and heavier.
- **Typical examples:** Earthenware mugs, rustic teapots.
- **Best fit when:** The set is sturdier, matte-finished, or has a handmade look.
**7013.10,7013.3X,7013.4X – Glass**
- **Defining trait:** Made from transparent or translucent glass; often used for visual appeal and heat retention.
- **Typical examples:** Glass teapots, clear coffee carafes.
- **Best fit when:** The set is see-through, modern in design, or used to display contents.
**7323.9X – Iron or steel**
- **Defining trait:** Made from metal; typically durable and heat-conductive.
- **Typical examples:** Cast iron tea kettles, steel coffee brewers.
- **Best fit when:** The set is heavy, metallic, and designed for heating or long-term use.
## Key differences
| Feature | Porcelain/China | Ceramic | Glass | Iron/Steel |
|------------------|------------------|---------|--------|------------|
| Material density | Low | Medium | High | Very high |
| Transparency | Opaque | Opaque | Transparent | Opaque |
| Heat retention | Moderate | Low | Moderate | High |
| Aesthetic | Refined, elegant | Rustic, earthy | Modern, clean | Industrial, sturdy |
## How to choose
- Is the set made of fine, white, translucent material? → 6911.10
- Is it heavier and matte, made from fired clay? → 6912.00
- Is it see-through or clear? → 7013.10/3X/4X
- Is it metallic and designed for heating? → 7323.9X
## Overlaps & pitfalls
A set may combine materials (e.g., glass body with metal handle), but the primary material determines classification. If unclear, prioritize the main structural component. No option is vague—each reflects a distinct material type