It is not forbidden to love precious stones or even to wish to own them, as long as you know how to consider them. ‘So how should we consider them?’ you ask.
As a link to the spiritual world. You must concentrate on them – on their purity, their colours, on their power to transmit light – and ask them to enter into you with all their properties and virtues, so that your entire being is emblazoned with the sparkling fire of sapphires, diamonds, rubies, emeralds, topazes, and so on.
This is why we should love and seek precious stones. Not to use them as adornment, but to be enlightened and nourished by their quintessence.