Product Name: Emerald Long Necklace Material: 18k gold, emerald, diamond 【about us】 The owner has been in the jewelry industry for more than three years, and he is more and more fond of jewelry, but he also finds that everyone seems to have some misunderstanding about jewelry. Jewelry is not only a variety of luxury brands, she should be like clothes, different brands of different shapes, and clothes are different, a good-looking clothes does not necessarily make you look better, but a delicate and delicate jewelry will make You are more temperament and more tasteful. [About material] We only do 18k gold, which contains 75% gold. You will often see white/yellow/red 18k gold because, in addition to 75% of the gold content, there are 25% of other metals, which determines the final color. The advantage of 18K gold is that it does not fade (except 18k white), it is generally not easy to be allergic, and it has the precious value of gold and the sense of quality is stronger. [true and false questions] Every piece of jewelry will be equipped with a nationally recognized test certificate. Each piece of jewelry can be found on the designated official website with a unique certificate.