fire green sphene gemstone, also known as titanite, is a remarkable stone known for its incredible fire, or dispersion, which often surpasses that of diamonds. This means it can split white light into an array of rainbow colors, creating a dazzling “fire” effect as it catches the light. Sphene’s green color is due to the presence of trace elements like iron, and it can range from a lime or olive green to a more intense, saturated green. The stone’s color, coupled with its intense dispersion, gives it a unique visual appeal that’s rarely seen in other gemstones. sphene hardness is 5 to 5.5 on the Mohs scale) When cut correctly, however, it becomes a stunning, highly refractive gemstone with a glassy to adamantine luster. Due to its rarity and optical properties, well-cut sphene is highly sought after by gem collectors and those looking for a unique piece of jewelry.