Pearls turn yellow in two days, so they are fake. This is the easiest way to identify the authenticity of pearl necklaces provided by Pearl Beauty Network "Pearl College". I hope I can help you with the rubbing method: real pearl necklaces will feel sand when rubbing against each other. You can hear the rustling sound in your ears, and you can grind pearl powder with a little force; Because fake pearls are coated shells, coated shells will slip when rubbed, and pearl powder cannot be ground.

You'd better choose some famous brands to buy pearl jewelry. This is the necklace I bought at Pearl Beauty, and I sent it to identify the genuine product.