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Gemological Institute Of America | All About Gemstones - GIA. Apply Today for a 2024. On Campus Program. Gemology, Jewelry Design & Manufacturing. Chinese Turquoise, Guatemalan “Ice Jade,” and the 2024 Tucson Report. New Gems & Gemology Issue. READ MORE. Emerald: The Gem of Renewal and Wisdom. May Birthstone. LEARN MORE. Capture Exceptional Beauty.
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- Emerald
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13 de mai. de 2024 · Gems & Gemology Turns 90! Duncan Pay, Editor-in-Chief. An overview of the Spring 2024 Gems & Gemology content. Read More.
Learn more about these popular gemstones, their meaning & about buying birthstone jewelry
- Jewelers and Goldsmiths
- Lapidaries
- The Scientists
- Gemstone Identification
- Getting Started in Gemology
Jewelers need to understand gemology to answer their customers' questions and identify any gems brought to them. Goldsmiths (and other metalworkers) need specific knowledge about the physical characteristics of gems in order to create appropriate settings. For example, a setting that would be ideal for a diamond could damage an opal, and the amount...
Lapidaries, or gem cutters, also need special knowledge. Appropriate cutting and polishing techniques vary from gem to gem. What would work well for one gemstone would be a waste of time or even disastrous on another gem. Faceting and gemstone color management go hand in hand. How cutters orient the roughcan greatly impact the appearance of the fin...
Although scientists with degrees in geology, chemistry, and even physics make up the smallest group of gemologists, they're influential. The systematic measurement and recording of the physical and optical propertiesused to identify gemstones is a well-established but ongoing scientific process. For centuries, the lapidary was in the best position ...
Gem identification is the heart of gemology. For example, some rubies and garnets are impossible to distinguish by their appearance, but their physical properties differ considerably. Ruby and garnet crystallographyvaries greatly. While the visible shapes of individual stones may vary, the crystal structures of these gems at the atomic level are di...
If you're interested in learning about gems, first, learn how they're categorized and the terms used to describe them. Next, study their physical and optical properties. With this background, you can start learning how to identify gemstones. Of course, there are many side roads to travel as you study gemology. Perhaps you'll become fascinated with ...
The first characteristic a gemologist uses to identify a gemstone is its chemical composition. For example, diamonds are made of carbon (C) and rubies of aluminium oxide (Al 2 O 3). Many gems are crystals which are classified by their crystal system such as cubic or trigonal or monoclinic.
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