The choice of material depends heavily on the end-use. For jewelry and fashion, prioritize Acrylic (PMMA) for lightweight needs, Glass or Crystal for high-refractive index and shine, or Natural Shell/Pearl for luxury markets. For industrial or medical applications, focus on Zirconia (ZrO2) or Alumina (Al2O3) ceramic beads, which require high wear resistance and chemical stability. Always verify the bead diameter tolerance (e.g., ±0.05mm) and the hole alignment to ensure compatibility with automated stringing or processing machinery.