শাড়ির জরি কি আসল সোনা?

Almost never, today. Traditional zari was silver wire gilded with gold, wound around a silk core; a little of that "tested" zari is still made and it is priced like the metal it contains. Most zari now is a polyester or copper core with a metallic coating — much lighter, far cheaper, and the reason a brocade saree that would once have cost a year's wages is within a wedding budget.

Neither is wrong; the label should say which. Tested zari keeps its colour for decades and can be reclaimed; coated zari may dull or darken over years, especially in damp, and wants dry storage away from moisture and perfume.