2021年4月12日 · Here’s how to tell: Jewelers and retailers in the United States and many other countries are legally obligated to disclose the karatage of gold jewelry with a stamp. The …

2020年6月24日 · Most pieces of jewelry feature stamps with abbreviations, sometimes a legal requirement for luxury goods. You’ll also see standard jewelry abbreviations on appraisals and …

2023年2月6日 · Stamping indicates the gold content of the "sandwich" by weight and karatage. Thus, a gold-filled article stamped "1/20-14K" indicates that gold comprises at least 1/20 of the …

2025年1月28日 · IGS stands for International Gemological Society, it is unlikely to appear as a marking on jewelry. Instead, “IGS” may refer to a brand, manufacturer, or personal engraving …

2023年6月15日 · Jewelry stamps are put on these accessories to reinforce the authenticity and quality of 10K gold jewelry. With the help of this quick guide, you can know the purity and …

Knowing how to read these stamps can help you verify the quality, authenticity, and origin of the piece of jewelry. As a brand that creates original jewelry pieces, we prepared a comprehensive …

2021年5月20日 · Stamps are markings on your pieces. On rings, the markings are often on the inside of the ring, and on chains, the mark is often on the clasp or right next to the clasp. By …

2019年6月24日 · Stamps are important to check because you can easily weed out fake gold in most cases, simply by looking at the stamp. First, let’s take a look at the ‘good stamps’ to see …

For the identification of the plant pathogenic bacterium Erwinia amylovora, the immuno gold staining (IGS) and immuno gold silver staining (IGSS) techniques are tested. The IGS and …

2023年8月29日 · Stamps on gold jewelry indicate important information about its composition and quality. Common stamps include karat marks, which denote the purity of the gold, and …