Vega is the best illustration in the sky of the scale of precession, because it has held and will hold the position that Polaris holds now.
The earth's rotational axis traces a circle on the sky with a period of about 25,800 years. Vega lies close to that circle. It was the pole star around 12,000 BC, roughly fourteen thousand years ago, and it will be again around the year 13,700. Between those dates the pole moves through Thuban in Draco, which was the pole star of the Egyptian pyramid builders around 2700 BC, and then to Polaris.
This should be set against the astrological reading of the star, and the point is that it does not belong to it at all. Vega's traditional nature is Venus and Mercury, giving refinement, artistic and musical gifts, idealism and a certain loftiness. Nothing in that reading references the pole, because at no point in the history of Western astrology has Vega been near it. The precessional fact is real and is simply irrelevant to the tradition, which is worth saying plainly, because modern writing about fixed stars has a tendency to import any impressive astronomical fact it can find and attach significance to it retrospectively.
Ptolemy gives Vega a Venus and Mercury nature, and the constellation reinforces it: Lyra is the lyre of Orpheus, and a star in a musical instrument acquires a musical character. The lyre association is at least as old as the Greek constellation figure and probably older.
Agrippa pairs Vega with chrysolite and winter savory in the Behenian list. Chrysolite is an unstable name that has meant peridot and chrysoberyl at different periods, so the intended stone is not certain.