What is a key property of varnish as a wood finishing option?

The key property of varnish as a wood finishing option is that it enhances the grain of the wood. Varnish is designed to bring out the natural beauty of the wood, accentuating its grain and color. This is particularly important in furniture and cabinetry where aesthetics are a significant factor. By adding depth and richness to the wood, varnish creates a visually appealing finish that highlights the unique characteristics of the material.

The other options present inaccuracies about varnish. While some may consider durability in different finishes, varnish is generally known for its durable properties, making the notion of it being non-durable misleading. Although varnish is commonly available in clear formulations, it can also be tinted or colored, which contradicts the assertion that it is only available in clear. Lastly, varnishes are formulated to resist fading; thus, suggesting that it fades quickly does not accurately reflect its typical performance when properly applied and maintained.