## Common ground
All options are decorative architectural elements used as cornices or friezes, typically installed at the top of walls or between structural levels.
## Options at a glance
**4409.2X,4421.99 – Made of wood**
- **Defining trait:** Crafted from natural timber, often carved or shaped for ornamental use.
- **Typical examples:** Wooden crown molding in classical homes, carved wooden friezes in period buildings.
- **Best fit when:** The material is visibly wood-based, with grain and natural texture.
**6802.2X,6802.9X – Made of monumental or building stone**
- **Defining trait:** Carved from solid natural stone like marble, granite, or limestone, used in durable, high-end architecture.
- **Typical examples:** Stone cornices on government buildings, classical temple friezes.
- **Best fit when:** The piece is heavy, rigid, and made from quarried rock.
**6803.00 – Made of slate**
- **Defining trait:** Constructed from thin, split sheets of slate, typically used for roofing or cladding but also in decorative bands.
- **Typical examples:** Slate cornices on historic homes, slate friezes in rural architecture.
- **Best fit when:** The material is flat, layered, and has a dark, mineral appearance.
**6810.99 – Made of cement concrete or artificial stone**
- **Defining trait:** Molded from synthetic or composite materials that mimic natural stone but are lighter and more affordable.
- **Typical examples:** Decorative moldings in modern buildings, faux stone cornices.
- **Best fit when:** The piece is mass-produced, lightweight, and looks like stone but isn’t natural.
**6905.90 – Made of ceramic**
- **Defining trait:** Fired clay-based material, often glazed or patterned, used for decorative architectural details.
- **Typical examples:** Glazed ceramic friezes in Spanish-style homes, terracotta cornices.
- **Best fit when:** The piece has a glossy surface, vibrant color, or intricate hand-painted design.
## Key differences
| Option | Material Type | Weight & Durability | Surface Finish | Common Use Case |
|--------|---------------------|---------------------|--------------------|----------------------------|
| 4409.2X | Wood | Light | Natural grain | Traditional, interior |
| 6802.2X | Natural stone | Heavy | Polished/rough | Monumental, exterior |
| 6803.00 | Slate | Medium | Flat, matte | Historic, roofing areas |
| 6810.99 | Concrete/artificial | Medium-heavy | Smooth/molded | Modern, cost-effective |
| 6905.90 | Ceramic | Light-medium | Glazed/patterned | Decorative, glazed finishes |
## How to choose
- Is it made of natural timber? → 4409.2X,4421.99
- Is it solid stone (marble, granite)? → 6802.2X,6802.9X
- Is it flat, dark, and split from rock layers? → 6803.00
- Is it molded, lightweight, and looks like stone but isn’t? → 6810.99
- Is it glazed, colorful, or made of fired clay? → 6905.90
## Overlaps & pitfalls
A piece may resemble stone but be concrete (6810.99 vs. 6802.2X), or be ceramic with a stone-like look (6905.90 vs. 6810.99). If unsure, prioritize the **material’s origin**: natural rock → 6802.2X; fired clay → 6905.90; synthetic composite → 6810.99. Do not assume appearance alone determines classification