The ruby

Red as love, passion, power and fire, the ruby radiates warmth and life. In the fascinating world of gems, the ruby is king and imposes its law! Since ancient times, the ruby has been one of the most precious stones. It is also one of the most...

The spinel

Just by the name alone, the collective memory associates it with synthetic spinel. The reason for this is that this magnesium aluminate (Mg Al2 O4) has been manufactured for a long time, but spinel does exist in its natural form, in the form of...