I want to buy gold but there are too many gold brands on the market and the price is different. I have seen all the eyes. I want to ask friends who knows that the brand is good and the price is cheap. Thank you

I bought a silver ring that is said to be Egypt's 925 or 990, but took 2 days to find that there was a circle of green and blue marks on my fingers. It should be a ring fade. Is this ring I bought? Is it true that the silver ring will fade?

How much does 10 carat diamond ring cost? How to choose carats?