BALLS – Synthetic
Sapphire

Like ruby, sapphire is an ultra-hard, mono-crystalline, chemically inert material. However, Synthetic Sapphire Balls are transparent. They have excellent optical properties, including a high refractive index of 1.76. In fact, half-spheres of this material are used as scratch-proof lenses for opto-coupling devices or flow cells in analytical detectors.

Grade: 25.   Sphericity: 0.000025”.   Specific Gravity: 3.98.