Precious stones hold a great attraction for most people, and there is nothing objectionable in this

"Precious stones hold a great attraction for most people, and there is nothing objectionable in this. But only if they know how to consider them, or the desire to possess them can lead to the most terrible crimes. You will say: 'But how should we consider them?' As a link to the spiritual world. If you learn to concentrate on them, on their purity, their colours, and their power to transmit light, gradually their properties and virtues will enter into you, and your entire being will be emblazoned with a thousand lights. Sapphires, diamonds, rubies, emeralds, and topazes will be alive within you; and they will belong to you in a way you could not possess materially. Love precious stones, use them not to adorn yourself, but to illuminate and nourish you by their quintessence. "