Choose a proper gemstone by its colour!

Our world is bright and colourful! In general there are about 50 trillion of colours in the world. Of course we can't distinguish all of them. Our eye can discern about 7 - 10 million of colours - still unbelievable, right? From the very early ages people used colours to express thir feelings and emotions, sometimes social status and religious beliefs and so on. As we know there are 7 major colours - Richard

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