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The #1 factor in gemstone price
Автор: Gemology for Schmucks
Загружено: 2020-01-02
Просмотров: 33520
Описание:
How to look at the 3 components of colour in gemstones. With these three building blocks, you can build an awareness of the price point of gemstones. Without these three concepts, we are doomed to be a schmuck.
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