Harold Lustig dichroic crystal mezuzah case features a stunning play of light and color, crafted from optically pure glass with a NASA-perfected metallic oxide coating. The geometric design creates a multi-hued iridescent effect that shifts from vibrant green to deep gold and blue as it rotates. This contemporary piece includes an etched Shin symbol and comes in its original presentation box with an informational insert titled "The Optical Glass Story." A separate red mounting strip is included to secure the case to a doorpost. This artistic Judaica piece combines modern technology with traditional religious significance, making it a beautiful addition to any home. This piece is a finish pecfected by NASA for use in the space shuttles.