Buyers should prioritize natural stone types such as marble, travertine, alabaster, or onyx depending on the desired light translucency. Onyx and alabaster are prized for their natural transparency, allowing light to glow through the stone, while marble is preferred for its structural durability and premium weight. Ensure the supplier uses solid stone rather than stone powder composites, and verify that the stone is sealed with a non-yellowing protective coating to prevent oil absorption and staining over time.