Gemstones Identification Procedure: How Gemologists Determine the Authenticity of Precious Stones

Gemstone identification process: How gemologists distinguish between genuine and fake gemstones

Gemstones are both attractive and valuable, and there is a huge demand for them. However, not all shiny and colored stones can be called gemstones. To determine whether a gemstone is genuine and how much it is worth, gemologists use various identification methods. This article will explain the specific process of gemstone identification and how these methods are used.

Visual inspection

Appearance inspection is one of the most fundamental methods for identifying gemstones. Gemologists will examine the color, shape, texture, and transparency of the gemstone. Additionally, they will look for any flaws, cracks, or inclusions on the gemstone, which can help determine whether it has been treated or optimized, as well as its origin. This step is actually quite simple, but it can help gemologists eliminate those fake or synthetic gemstones.

Magnetic test

The magnetic test is a method that does not damage the gemstone. It mainly checks whether the gemstone is magnetic. Gemologists will use a magnet to observe if the gemstone reacts. Most gemstones are diamagnetic, meaning they will not be attracted by a magnet. However, some merchants selling synthetic gemstones will specially treat the gemstones to make them magnetic. If the gemstone reacts to the magnet, it can be basically determined to be synthetic.

Ultraviolet test

Most gemstones will have a unique fluorescence reaction when exposed to ultraviolet light. Gemologists will use an ultraviolet lamp to observe this reaction. In this test, the fluorescence of the gemstone can also be used to determine whether it has been treated. Some treatment methods will weaken the fluorescence, while others will strengthen it. Therefore, this test is particularly useful in the identification process.

Refractive index test

The refractive index test mainly measures the speed at which light passes through the gemstone and the angle at which light is refracted within the gemstone. Through this test, the chemical composition of the gemstone can be determined, as well as its type. Gemologists will conduct this test using a refractometer, and after the test, they will obtain a numerical value. Then, they will compare it with the data in the database to determine if the gemstone is genuine.

Specific gravity test

When identifying gemstones, the density of the gemstone also needs to be measured. The specific gravity of gemstones can provide a lot of useful information, such as the type of the gemstone and its quality. Gemologists use the method of liquid statics to measure the specific gravity of gemstones. After the measurement, they compare the results with the standard specific gravity of known gemstones.

In summary, all gemstones are extremely precious. To determine their value accurately, precise identification is particularly crucial. Gemologists use various gemstone identification methods to ensure that the gemstones are genuine. Although gemstone identification may seem easy, because gemstones are rare and valuable, it is best for buyers and sellers to seek the help of professionals when making purchases. Therefore, if you want to buy a valuable gemstone, you must seek the help of a gemologist and have them identify the authenticity and quality of the gemstone.

In summary, gemstones are expensive and the identification process is indispensable. Correct gemstone identification can help you distinguish whether a gemstone is a precious natural gem or an inferior imitation made by humans. I hope this article can make you understand the importance of the gemstone identification process.