Used extensively in ceramics and refractories due to its high thermal stability and resistance to thermal shock. Commonly found in glazes and enamels, where it acts as an opacifier to produce a white, opaque finish. Employed in the manufacture of foundry molds and cores because of its low thermal expansion and chemical inertness. Also utilized in dental and medical implants for its biocompatibility and wear resistance. Applied in precision optics and industrial abrasives due to its hardness and durability. Found in some specialty coatings and pigments where resistance to high temperature and corrosion is required.