Blue crystal, also known as blue crystal, chemical formula: Al2SiO4 (F1OH) 2, is an orthorhombic system, hardness: 8, specific gravity: 3.49, refractive index: 1.63 - 1.64. The crystalline particles of the topping stone are generally small, but the energy is warm, thick, and penetrating; the color is very similar to that of the sea blue. Blue crystal is the birthstone of October and is the best gift to express friendship. It is believed that wearing blue crystal can be used as a talisman to eliminate sorrow, remove evil, and enhance courage and wisdom; in the West, it is regarded as a symbol of fertility and piety. It can increase a person's wisdom and prudence, and is a coolant for boiling water and anger. Blue crystal symbolizes carefree. Have you heard the true crystal music played by the natural crystal piano? In the "Forgetting Blue Crystal" album, a unique natural crystal piano, with violin, flute, erhu, guzheng, etc., knocks out the colorful and colorful crystal world. . The crystal piano flashes with light and pure notes, the soothing rhythm brings out the relaxed atmosphere of blue crystal, fresh, simple, natural, non-scaling piano sound, gently touches the heart, flying notes and soft melodies lead you into the laughter Music park. Others say that blue crystal represents wealth. Some also say that blue crystal represents shrewdness. Some also say that the blue crystals in the five elements are wood, which means that the mind is flexible. Crystal is the rarest of "blue crystal". Bedskirt Set,Pleat Bed Skirt,Ruffled Bed Skirt,Bed Skirt Set Home Mukun(Nantong) Textile Co.,LTD , https://www.mukuntextile.com