Studying the internal structure of gems in laboratories. This includes studying their purity, reflective index as well as external composition
Researching rare gems and stones. You may have to look up a rare stone from time to time and classify it on the basis of its characteristics.
Classifying gems into different grades and marking them for sale. Grading is done as per cut, colour and clarity. As a gemologist, you will have to observe gems carefully and grade them accordingly.
Determining the market value of each grade and providing sales information. Once you finish grading the gems, you will be able to determine the right price based on the grade and prepare the necessary sales information for the same.
Cutting and polishing gems. You will have to conduct the finishing treatment on each gem before it is set in jewellery. For instance, you may conduct a High Pressure High Temperature (HPHT) process to make a diamond whiter.
Conducting lab tests. You would treat gems in different chemical solutions to achieve perfect clarity.