Natural Diamond Identification Report

JTR Research continues to seek updates on the diamond growth processes as well as treatment processes. Whenever a new method is detected in a diamond, all data belonging to the diamond together with diamond scanned images under various light conditions are stored in JTR cloud-based operating system.

The purpose of this chain of actions to collect these data is to create automated processes for the detection of authenticity in the JTR cloud-based operating system

JTR uses highly sensitive micro-balances to measure the mass of a diamond. These micro-balances are able to measure the carat weight with six decimal places. These extremely price measurements are very important due to the fact that one decimal point can change the value of a diamond substantially.
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Repeatability of these extremely price measurements requires some additional precautions.

Carat weight is also cross-checked with a theoretical calculation based on proportions of diamonds.

JTR applies image processing algorithms to detect the colour subgrades. JTR Research has developed a diamond colour acquisition device to have detailed answers for high-precision colour grading challenges. JTR uses multiple colour spaces to describe a diamond’s colour as close as possible to the human eye. Color space conversion results are compared with reference stones results, in the light of statistical comparison of results a precise grading for the colour of diamonds has been made possible.

The last technique is used mainly for quality purposes. The digital image of the sample diamond is compared with digital images of reference diamonds. This method helps researchers to improve the colour grading algorithms in comparison with visual and image processing-based analysis.

Fluorescence in diamonds happens because an electron changes its energy state due to a high-energy beam and relaxes back to its original state by emitting light. This phenomenon is very important for gemmologist to determine the authenticity of diamonds as well as for traders to define the value of diamonds.

JTR keeps a record of each diamond’s fluorescence colour and the intensity of fluorescence. JTR fluorescence grading is based on image processing algorithms and visual inspections.

Clarity is the absence of internal characteristics and external characteristics in diamonds. When diamonds are examined for clarity grade five different elements are taken into consideration these are; size, nature, number, position, brightness/contrast, and reflections. JTR Researchers are putting a significant amount of time and resources to define these five elements automatically. The researcher's purpose is to develop an algorithm to define the clarity grading based on statistical data.

JTR has sets of reference stones for diamond experts to compare with sample diamonds; thanks to the development of the cloud-based operating system JTR is gathering a digital clarity reference stone library. This reference stones library will allow diamond experts to grade more consistently and more precisely. Reference stones digital library is expanding rapidly and will continue to grow

Cut grade is one of the most important elements of diamond grading. Proportions of diamonds define the brilliance and fire of a diamond. Therefore better proportion grade means a better visual of a diamond.

As diamonds represent perfection, the cutting processes of diamonds have to reflect high precision. Symmetry is one of the elements for this precision, it is expected that facets of diamonds and general attributes shall be symmetrical to each other. For further details regarding symmetry parameters please visit our library.

Polish grade covers the external characteristics of diamonds. External characteristics mainly occur during the manufacturing process of diamonds. These characteristics can be polishing lines, burn marks and many others. The absence of external characteristics would result in a better polish grade. Please visit our library for further information