Neodymium-doped yttrium aluminum garnet (Nd:YAG) is a commonly synthesized crystal extensively employed in laser technology. Notably, Nd:YAG exhibits a unique and precise optical phenomenon. It undergoes a distinct color transformation, transitioning from its natural hue to a whitish appearance when subjected to fluorescent lighting, and subsequently reverts to its distinctive lilac coloration when exposed to alternative light sources. In addition to its intriguing optical properties, Nd:YAG crystal is distinguished by its exceptional dispersion and durability, making it an ideal choice for various jewelry applications.

This lot consisted of the uppermost portions of exceptionally high-quality Nd:YAG crystals, known as boule tops.