Last week, the topic of the lecture (the course in gemstones and minerals) was diamonds. We learned about the different grades, colours, chemical formula, shapes, synthetic versus imitated and more. Our teacher Linda also brought some real diamonds and “fake” (synthetic and imitated) diamonds to the lecture. We took a look on the stones under a 10x lens. They were so beautiful!
Yesterday’s topic was corundum. The lecture was mainly about ruby and sapphire. This time our teacher took some ruby and sapphire with her. The ruby stones were in different shades of red (both real and synthetic) and the sapphires in different shapes and colours. I forgot my lens at home, so I could not take a closer look on them. What a pity!
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