Main features: intellectual development, improve intuition and popularity, calm, promote interpersonal relationships. With brainwave frequencies similar to calm nerves, ease the effect of bad temper. Can cure insomnia, can develop wisdom, enhance memory, improve interpersonal relationships. Purple is negative nature, dominate the world right brain, that intuition and the subconscious, often with mental people, especially suitable for multi-owner amethyst, can help people achieve mental focus on thinking and improve the vitality of their brains. People in times of hardship can think calmly and fight. Amethyst belongs introverted god, able to calm people's emotions, in love, friendship, family and superiors and subordinates off first on the magical special effects. Amethyst crystal at high temperatures will turn yellow, purple amethyst topaz is subjected to high temperatures in a volcanic eruption heating, amethyst interior color change, it becomes a yellow violet, there has purple Ametrine friends. Ametrine is not artificial, so we go to shops to buy it do not worry there are false, but some businesses manage an interval of a citrine amethyst called Ametrine. Product Details - Shape / Type: Pendant / Red agate / Charm Gemstone - Material / Gem: NATURAL CRYSTAL Gemstone - Grade / Type:100% Grade A / Type A / Class A Shipping/Handling for standard int'l shipping (10-18 days delivery) - Refractive Index:1.66 - 1.69 - Specific Gravity:3.33 - 3.34 - Size : 36mm*25mm*9mm - Color Variety: purple Color, Icy Variety - Luster:Grassy Luster - Surface Texture:Medium Grain - Condition:Excellent