I started by looking up a few definisions of aristocratic.
1. A member of a ruling class or of the nobility.
2. A person having the tastes, manners, or other characteristics of the aristocracy: a natural aristocrat who insists on the best accommodations.
3. A person who advocates government by an aristocracy.
4. One considered the best of its kind: the aristocrat of cars.
and a few words from the thersaurus.
I have also got a few images of different types of standardlamps.
I would probably design my standard lamp with a traditional look in mind.
As a basic premise for my story, I thought of a situation where an aristocratic standard lamp is bought from auction and placed in a tatty flat with tatty things in it. It would then be a matter of working out how he would act in this place.