You are looking at a trough master crystal from Vera Cruz Amethyst, from Mexico. The top of the crystal seems to be split open, because there has been growing a smaller crystal right through it. When holding it, it fills the complete aura with violet light. It opens the third eye chakra to reveice information from the violet light, and then connect the rest of the chakra’s with the third eye from down upwards. It also has two notches. Placing your finger or thumb on it will transfer information, codes or knowledge from the crystal to it bearer. The colors on the pictures may vary from real life colors.