看名字不像是英文机构
③日本真珠输出加工协同组合的特选真珠 ④日本GEM GRADING CENTER鉴定证书（简称GGC）⑤新日本宝石学研究...
dyed jade will show red. The Chinese jade industry uses a grading system to classify jadeite by the amount of enhancement it has received. According to the system, grade A jadeite is not dyed nor impregnated but may have received a coating, which is considered stable. Grade B jadeite may ...
Developing a comprehensive colored stone grading system has been the dream of gemologists since the late 1970's, but despite a number of valient attempts, we are no closer to the goal today than we were four decades ago. This article examines the various problems of colored stone grading, exp...
The Chinese jade industry uses a grading system to classify jadeite by the amount of enhancement it has received. According to the system, grade A jadeite is not dyed nor impregnated but may have received a coating, which is considered stable. Grade B jadeite may have been impregnated and ...
★★☆Aizu Online JudgeAizu online judge is a contest platform and problem archive hosted by The University of Aizu. It has a lot of great problems from programming competitions in Japan. ★★☆UVaAn old-school problem archive / online judge with rich history. Thousands of problems, including...
Hari Krishna Exports, a prominent manufacturer of natural diamonds, proudly announced its participation at the Hong Kong Diamond, Gem and Pearl Show with a sustainable booth made from 80% recyclable materials. The company’s sustainable booth aims to support the Unite...
This is probably due to the weak Japanese economy and the new gem show in Japan. I attend this show to find stones for my clients. Also, the show is critical to obtain market information to analyze trends. I query the dealers, mine owners, and international suppliers. Here is a gem by...
We need an educational system for colored gemstones like they have for diamonds. The truth is AGL has been doing colored gemstone grading for over 20 years. AGL has always promoted colored gemstones with reports and has always tried to get GIA and AGTA involved. It is a brilliant idea to...
Myanmar's jadeite mines occupy a privileged place, representing the planet's principal source of fine jadeite jade. This article covers the deposits themselves, along with the cutting, grading and trading of jadeite.