Information and educational services for everyone interested in gemstones. For gemologists, hobbyists, jewelers, lapidaries and everyone in between. Learn how to get started with the International Gem Society’s guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!

From Actinolite to Zoisite, dig into every facet of the fascinating world of gems with IGS gemology courses! Pick and choose from what subjects interest you. Courses are guided lesson-by-lesson with progress tracking. Test your knowledge with written exams and gem ID exams. Earn a certificate to help get a leg up in your career.

2023年11月20日 · Made from two or more materials, assembled gems can make durable and affordable jewelry. Learn more about gemstone doublets, triplets, and other varieties. By Barbara Smigel, PhD. GG, International Gem Society, updated on November 20, 2023. An assembled gemstone is constructed from two or more combined materials.

IGS can create your dream engagement ring or custom piece of jewelry from your own design or picture. We can also convert your own jewelry and turn it into a totally new piece. Learn more about our custom jeweler and browse our portfolio of custom work.

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 other important documents. This handy jewelry abbreviations list …

IGI grading reports play an essential role in the global diamond, gem and jewelry market, serving as the common language of trust and confidence in the gemological world. IGI analyzes every gemstone to identify species and variety, provide detailed information and disclose any treatments that may be present.

IGS has the world’s most comprehensive gemstone library, as well as a community forum where members can connect and share information with one another. The International Gem Society is an invaluable resource for anyone interested in the study and appreciation of …

IGS Professional - Diamonds Course. To be able to start shopping at least for some preliminary information on shape and size diamond that’s ideal for you. Click here to know more !!

Online gemology course covering everything from science of gems to identification to valuation and appraisal. Earn an IGS Professional Gemologist Certification.

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 on the jewelry piece. It’s important to consult with a reputable jeweler or appraiser to get a better understanding of the specific meaning of the “IGS” marking on ...