Two kinds. Chow Tai Fook's boxes contain diamond rings with black cores and gold necklaces with white cores, but in our country, red is a symbol of good luck, so most boxes are red cores. Chow Tai Fook's boxes have various colors, including black, white, red and blue.

Precautions:

If you don't handle and collect the silver jewelry after wearing it, it is very likely that the silver jewelry will turn black. At this time, you should use a small jewelry brush to clean the fine seams of jewelry, then drop a drop of silver emulsion on the paper towel to wipe off the black oxide on the surface of jewelry, and then use a silver cloth to restore the original brightness of jewelry. After that, remember to do daily general maintenance to prevent the silver ornaments from turning black again.