Generally, it will be found in all regions, and the gold and jewelry quality inspection centers, jewelry and jade appraisal centers or major gold shops of quality and technical supervision and inspection institutes in various provinces and cities can be appraised.

Gold identification can start from six aspects: color, imprint, hardness, sound, weight, hardness and scraping porcelain plate. Among them, according to the different luster and color of gold, pure gold, k gold, real gold and fake gold can be roughly distinguished. The old jargon handed down from pawn shops, "Seven green, eight yellow, nine five red, yellow and white with gray and half gold", is to describe the purity of gold. The color is blue and white, the purity is not high, the color is red and yellow, and the purity is high.