The phrase "has a different appearance" is correct and can be used in written English.
It is typically used to describe something that looks different from another thing. Example: "The new model of the car has a different appearance than the previous one, with sleeker lines and a modern design."
The cluster designated 47 Tucanae (NGC 104), with an absolute visual magnitude of −9.42 at a similar distance of 14,700 light-years, has a different appearance with strong central concentration.
In fact, over the same test period, the evolution of the relative wall displacements (Fig. 18) has a different appearance to that of the injection pressure.
This selection alters some aspects of the story: the first Persona gained by the Protagonist, Orpheus, has a different appearance; Igor's assistant in the Velvet Room, Elizabeth, can be replaced with a male equivalent named Theodore.
A subset of ΔC molecules (∼8%) has a different appearance.
R2 is organized in large single dots in medulloblastomas, while it has a different appearance in other tumors.
Although this material has a different appearance between S. lycopersicum and S. habrochaites, its position and distribution across the boundary between the glandular and the intermediate cells suggest a similar role.
Many patients considering sinus surgery today have had surgical procedures in the past that were directed at removing diseased mucosa, rather than improving sinus drainage, and have a different appearance on CT.
If a Muslim is in a combat or godless area, he is not obligated to have a different appearance from those around him.... Resembling the polytheist in religious appearance is a kind of "necessity permits the forbidden," even though they (forbidden acts) are basically prohibited...
