Crocoite vs Rutile

Crocoite is a lead chromate mineral with the chemical formula PbCrO4. It commonly forms slender, elongated crystals in vivid orange, red, or reddish-orange colors, making well-formed specimens valued by mineral collectors, although its softness and lead content limit practical use as jewelry. The mineral was first identified from material found in the Ural region, while the Dundas district of Tasm...

Rutile is a naturally occurring oxide mineral composed mainly of titanium dioxide (TiO2). Its tetragonal crystals are commonly reddish-brown or yellow-brown and have a very high refractive index, strong birefringence, and notable dispersion. Fine rutile needles in quartz and other gems can create chatoyancy or asterism when aligned, and rutilated quartz is a recognized collector and gem material....