The Pearl Institute Co., Ltd is another highly reputable pearl certification organization in Japan. What’s the difference between an Certificate Of Pearl Identification and an Pearl Grading Report? Certificate Of Pearl Identification: This only verifies whether the pearl is natural or cultured and does not indicate its quality grade. The content of the identification certificate is relatively simple. Looking at sample certificates from two organizations, we can see that they include the product name, size, and an image of the submitted sample. The image below shows an identification certificate from the Pearl Institute Co., Ltd. The next image shows an identification certificate from the Pearl Science Laboratory. Pearl Grading Report: Similar to diamond grading, this certificate classifies the quality...
Pearls have been a prized gemstone for centuries, and their beauty and elegance have made them a popular choice for jewelry. However, with the rise of the pearl market and the increase in demand, it is essential to know what to look for when buying pearls. One factor that is often debated is whether a certificate is necessary when buying pearls. In this essay, we will explore the points mentioned and provide a comprehensive overview of the significance of pearl certificates. Some certificates are highly respected in the pearl industry and are essential for trading pearls in certain markets. This statement holds some truth. Certificates can provide valuable information about the pearls, such as their mother of pearls species, size,...
Avoid chemicals. Do not wear while doing household chores. Do not wear while bathing. Do not wear while sleeping. Do not wear while sweating. Avoid scratching with hard objects. Avoid high-temperature baking. Clean with a soft cloth. The chemical composition of pearls is calcium carbonate, which foams when exposed to acid. Therefore, pearl jewelry should not be worn during bathing, should not come into contact with cosmetics, and should not be exposed to acidic substances. This can potentially corrode the pearls and cause them to lose their luster. Pearl jewelry should also not come into contact with oils, as oils can easily penetrate the surface of the pearls, contaminating them and diminishing their surface shine. Pearls have a low hardness...
What exactly are irradiated pearls? Irradiating pearls involves using rays (cobalt 60) to change the bead core from white to black, resulting in a silvery blue pearl bead layer. Irradiated pearls only change the color of the bead core; the pearl's quality, blemishes, and nacre are unaffected. Poor-quality pearls will remain poor-quality pearls if irradiated. Are irradiated pearls harmful to the human body? For ordinary consumers, wearing irradiated pearls will not have any obvious radiation effects on the body because the radiation level of Cobalt 60 disappears after stopping the irradiation process. In addition, Cobalt-60 is also widely used in food disinfection and sterilization. It can effectively kill bacteria, viruses, and fungi. Therefore, it is considered safe by the World Health...
Outline The Japan Pearl Export and Processing Cooperative Association was established as a commercial cooperative under Japanese law in September 1950 (Showa 25). At the time of its establishment, the global pearl market was immature and a sound market was needed. To meet these needs, the main purpose of the association is to ensure that high-quality pearls are smoothly circulated in the market at a stable price, so as to build a sound market. Since its establishment more than 70 years ago, the trade union has devoted itself to hosting bidding fairs and has made great contributions to the development of Japan's pearl industry. The combination is abbreviated as PEPCA, which is the abbreviation of the beginning of the trade union's...
