Vintage or retro or even antique, it is important to remember that these pieces have been worn and are not in perfect condition. There will be some wear and tear. I generally do not clean them beyond a wipe down with a jewelry cleaning cloth. I do inspect crystals, pearls and rhinestones for looseness and missing items. I will not sell a piece that has loose or missing stones as it is too difficult to replace them.
With rhinestone jewelry, stones may darken over time, but as long as the stone is intact, I will sell a piece with darkened stones. I do not view stones darkened with age as a defect.
Where possible, I will give the designer if marked and if a piece is sterling or real gold. If it does not say it in the description, it probably has no stated designer and the metal will not be gold or sterling. The same with stones....if I do not put genuine XXX in a description, it is probably faux pearls, and gemstones.
I also have no idea of the history of the piece before I acquire it. After it comes to me, I store in bags or boxes with silica packs tp absorb moisture to prevent tarnish and oxidation I also store in a smoke-free environment and away from pets.
Vintage, Retro and Antique jewelry are sold AS IS and ALL sales are FINAL.