When it comes to designing for engraving on slate coasters, simplicity and contrast are key factors. Here are a few design types that work exceptionally well:

• Text-Based Designs: Simple, bold fonts are ideal. Consider using minimal text, such as a single word or short phrase, which provides a clear message and enhances readability.
• Geometric Patterns: Clean lines and repetitive geometric shapes create an eye-catching effect without overwhelming the surface. These designs age well and maintain their elegance over time.
• Silhouettes: Simple silhouettes of nature, animals, or objects add a touch of artistry. These designs should be well-defined to ensure clarity when engraved.
• Monograms and Initials: Personalized monograms make excellent designs for coasters. They evoke a sense of uniqueness and can be styled in various fonts.
• Minimalist Illustrations: Small, simple illustrations with limited detailing can be effective. They should be clean and easily recognizable to stand out on slate.

Ultimately, designs should be chosen with the engraving process in mind, ensuring that they are suited to the texture and color of the slate.