耐久性はカラットとカバー力がすべてです.
カラットが大きいほど耐久性が高くなります. 24 カラットゴールドは “純粋な” 金. ただし、ここで純粋であるということは、ジュエリーに加工されたときに単なる金になるという意味ではありません.
金 is a soft metal.
それで, ジュエリーで, ある程度の耐久性が必要なので、, alloys are often used. An alloy is a metal that is combined with gold to increase durability.
Like all gold jewelry, vermeil follows suit. If you are looking for the most durable kind of jewelry, you’ll look for 24 karat gold plating on the piece, but even 10 karat vermeil is better quality than other gold-plated alternatives.
Thickness is also important. The thicker the plating, the longer it will last.
You will want to look for the quality of the core alloy. Vermeil makes this easy for you. As genuine vermeil will always have a core alloy of sterling silver.
If there is a base metal over the sterling silver, it must be disclosed per U.S. 規則.
Micron plating is what it is all about.
This is the thickness of the gold. Micron plating at minimum is 1 ミクロン, where it becomes measurable. But for this type of jewelry, the required minimum is 2.5.