Letter openers are crafted from a variety of materials, each offering distinct characteristics in terms of aesthetics, durability, and functionality. Common materials include:
1. **Metal**: 
   - **Stainless Steel**: Known for its strength and resistance to rust, stainless steel is a popular choice for its durability and sleek appearance.
   - **Brass**: Offers a classic, vintage look with a warm golden hue, often used in decorative or antique-style letter openers.
   - **Silver**: Used for high-end, luxury letter openers, silver provides an elegant and sophisticated finish.
   - **Pewter**: A softer metal, pewter is often used for decorative letter openers with intricate designs.
2. **Wood**: 
   - Various types of wood, such as oak, mahogany, or walnut, are used for their natural beauty and warmth. Wooden handles are often paired with metal blades for functionality.
3. **Plastic**: 
   - Lightweight and affordable, plastic letter openers are common for everyday use. They can be molded into various shapes and colors, making them versatile and customizable.
4. **Bone or Ivory**: 
   - Historically used for their smooth texture and aesthetic appeal, bone and ivory are less common today due to ethical concerns and legal restrictions.
5. **Glass or Crystal**: 
   - Used primarily for decorative purposes, glass or crystal letter openers are often ornate and fragile, serving more as display pieces than functional tools.
6. **Ceramic**: 
   - Occasionally used for artistic or decorative letter openers, ceramics offer unique designs but are more fragile compared to other materials.
These materials can be combined or embellished with additional elements like gemstones, engravings, or inlays to enhance the letter opener's aesthetic appeal and personal significance.