Antimony telluride is a topological insulator with the chemical formula of Sb2Te3. It crystallizes in an orthorhombic space group. Our Sb2Te3 crystals measure centimeters in size, rated at 99.9999% purity, and exhibit strong and sharp Raman signal, ideal environmental stability, and high crystalline order. Crystals are synthesized through flux zone technique to achieve extremely high crystallinity for advanced research applications and fundamental research projects.