24k yellow gold necklace and thousand gold necklace which is cheap
どちらが良いですか, 24k yellow gold necklace and thousand gold necklace? This is a difficult question. Some people like 24K gold, some people like thousands of gold. The difference between them is not great, and the purity is only a little bit worse. If purity is not critical, 2つは同じです.
私の国には金製品のマーキングと識別に関する規制があります, 通常は制作会社コードが必要です, 材質名, コンテンツインプリント, 等, 刻印がない場合は不合格品となります. The same is true internationally. But for some very fine products, it is allowed not to mark. National standard GB11887-89 stipulates that the gold content per opening (abbreviation of carat in English and karat in German, writing K) は 4.166%.
理論的には, we call gold with a content of 100% 24k; so the calculation method is 100/24 (the national standard in parentheses): the national standard GB11887-89 stipulates that every k (abbreviation of English carat, German karat, often written) “k”) The gold content is 4.166666%.
理論的には, 100% gold can be called 24K gold, but in reality it is impossible to have 100% 金, so China stipulates: gold with a content of more than 99.6% (含む 99.6%) can be called 24K gold.
数千のゴールド: Thousands of gold with a gold content of not less than 999 is called thousands of gold, which is the highest value in the name of jewelry. The imprint is thousands of gold, 999 金, gold999 or g999. 純金: The solid gold with a gold content of not less than 990. The imprint is “Full Gold”, “990 金”, “gold990” または “g990”.