Hi, it's my first time here. I bought a 13mm GSS pearl from Tucson gem show a couple months ago. It's more like the color of champagne rather than gold. The seller said it's natural color, but I see the champagne color on the top of the pearl seems to be lighter than the bottom. I don't know if that is usual for golden southsea pearl or not. So I was wondering if this is natual color or dye? Belows are some pictures of the pearl. Thank you so much.