ITEM DETAILS - sizes may vary because its natural gemstones made by nature sizes are around 0.25-0.50 inches (5-8 mm) Rainbow Fluorite, also known as Fluor Spar, is a stunning stone that displays an amazing range of colors. ~ Healing ~ Truth Consciousness Aura cleansing Intellect Protection Fluorite boosts the immune system and stimulates the regeneration and restructuring of cells and DNA, particularly in the skin and respiratory tract, and heals ulcers and wounds. Fluorite strengthens bone tissue and alleviates rheumatism, arthritis, and spinal injuries.