Keystone Mat

Keystone Mat

Definition: A keystone mat is a decorative mat board with an opening shaped like a keystone, meaning it is wider at the top than at the bottom. This unique shape adds a visually dynamic presentation for artwork, certificates, or awards, subtly drawing the viewer's eye upward. Keystone mats are commonly used in both traditional and contemporary framing designs to enhance the perceived importance or formality of the piece.

Key Features

• Distinctive Shape: The top-heavy keystone form provides a sense of stability and grandeur in presentation.
• Customizable: Keystone mats can be cut to fit various sizes of artwork or certificates while maintaining proportional aesthetics.
• Visual Emphasis: The shape naturally draws attention to the top of the artwork or document, making it ideal for highlighting text or imagery.
• Versatile Application: Suitable for certificates, diplomas, awards, portraits, and fine art prints.

Best Practices

• Measure artwork precisely to ensure the keystone opening complements, rather than overwhelms, the visual subject.
• Consider double or triple matting with contrasting inner mats to enhance depth and focus.
• Maintain proportional margins around the artwork to preserve visual balance and prevent a crowded appearance.
• Use acid-free, archival mat boards to protect the artwork and prevent deterioration over time.

Related Terms

• Proportions
• Landscape Orientation
• Landscape
• Aspect Ratio