Gemstone Treatment Reports

Tutorial: How to use the Gemstone Treatment Reports

The Gemstone Treatment Report pages are presented in seven (7) parts:

Gemstone Name: This will provide you with which gemstone is being covered and any specific name identifiers with which you should be aware.

Treatment of Synthetic: This section will let you know whether we are dealing with a treated or synthetic stone and let you know the type of treatment or synthetic being discussed.

Identification Tools Required: This will let you know what specific tools you will need to perform a proper identification of the treated or synthetic gemstone. The purpose is to give you very specific information as to what tools will be required so that you can make a determination whether or not that identification will be possible using the tools you have at hand.

Primary Test: This will be the most important test to perform in order to identify the treated or synthetic gemstone. Most often magnification is the first step in the identification of treated and synthetic gemstones, but whatever is required this primary test will be the first test you should attempt in identification.

Secondary Test: This will include follow up testing that may be required to confirm a treatment or synthetic, or it may contain additional testing that can be done if the primary test is either not possible or not conclusive. The secondary test may even include a third or fourth level of testing that may be required or available for the identification. At times no secondary test may be available, or a secondary test may not be of any value or perhaps not required at all.  Whatever the status of the secondary test we will provide you with grass roots level information regarding testing that can be done by local, home town jewelers and gemologists whenever possible.

Repair and Setting: This section will provide quality information for goldsmiths and jewelers regarding special handling information when setting or repairing jewelry items containing these synthetic or treated gemstones. No jeweler should attempt any repairs or resetting of any synthetic or treated gemstone without reading this important section.

Image Library: This section will contain specific photographic images to assist you with a proper identification of treated and synthetic gemstones. These images are taken directly from actual gemstones in the ISG Reference Collection, and all images are taken for the purpose of providing you with clear photographic evidence to assist you with your identification and evaluation. These photographic images are updated regularly as new study specimens are found, new treatments are uncovered, and new methods of identification are developed. Examples of our image section are below. Please note that loading the main page of the Gemstone Treatment Report may take a few minutes due to the large number of images contained on that page. We appreciate your patience.

We appreciate your joining us in this effort. This is truly a world wide, industry wide effort to create a central clearing house of information for treated and synthetic gemstone identification. The main goal is to create a place where this information can be available to anyone in this industry, professional or consumer, anywhere in the world.


About Us

The Gemstone Treatment Report is a free access reference and study site powered by the International School of Gemology for the benefit of consumers and the gemstone industry. Visit us at this link: International School of Gemology.


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