When selecting an outdoor granite bench, prioritize natural granite over composite materials to ensure maximum weather resistance. Look for high-density stones like G603 (Light Grey), G654 (Dark Grey), or G682 (Yellow Rust) which are industry standards for durability. Ensure the stone is frost-resistant and UV-stable to prevent cracking in cold climates or fading under intense sunlight. For public spaces, a polished or honed finish is easier to clean, while a flamed or bush-hammered finish provides a non-slip surface and a more natural aesthetic.