The "richness" of gold beads will be related to the background color, which is highly saturated, so we will think it is thicker. Generally speaking, the color of golden beads will be darker in shading environment, and the color can be seen most clearly without shading in natural light, and the overall color will be fuller with low color clarity in natural light.
The luster of Nanyang Jinzhu is the place where pearls have aura and elegance. Good quality Nanyang Golden Beads, when you turn the pearls, you can see that each one has a strong surface luster, full of aura, and radiates brilliance from the inside out. When people face the light source and put pearls in front of them, they can often see a clearer figure. Therefore, judging the quality of Jin Nanyang pearls depends on whether there are jewels.