First of all, we need to clarify a question. When you talk about brilliance, do you mean radiant cherishment or radiant love? These are two different perfumes. The left side of the picture is Brilliant Treasure and the right side is Brilliant Red Love (the background is your problem, hehe).

The bottle caps of both models are made of plastic, and the density is relatively high (I wonder what the special materials above are made of?). The chrome plating that some people talk about should be the neck of the bottle, which is connected to the bottle and is not within the scope of the lid.

If I had to guess, you should ask about Brilliant Red Love~ The bottle cap of this perfume weighs about 20-30 grams, and it feels a little heavy when placed in your hand. My perfume is 75 Milliliters. The round edges are polished to create many cross-sections, which look more gorgeous due to the refraction of light. If you want to ask about "Brilliant Treasure", please add more~

PS: Those who have actually used it say that I strongly despise those who post pictures online~