Custom Wire Wrapped Dichroic Glass Necklace/Pendant/Slide/Enhancer Sterling Silver .935
Overall size: 2 1/8 x 1 1/4 inch or 53mm x 32mm
Dichroic glass is a fascinating product that is both ancient and modern. Dichroic (pronounced "dye-CROW-ick") glass means "two colors" in Greek. The name is fitting because it appears to have more than one color, especially when viewed under different types of light.
This reflective phenomenon is known as thin-film physics. It's the reason you see swirling rainbow patterns in a soap bubble, floating colors in oil on water and the dramatic colors of dragonfly wings.
NASA helped to popularize dichroic glass in the 1950s and 1960s. Metals were vaporized with electron beams and then applied to surfaces in ultra-thin layers transparent to the human eye. This coating was used to protect spacecraft technology from harmful radiation.