Sterling & Labradorite Ring, a stunning combination! If you love sterling, try fusing it with labradorite for an amazing look. Labradorite is part of the feldspar group. However, the most unique thing is the play of color that this stone displays. Additionally, it is the color that makes this stone truly uncommon. This phenomenon is called “labradorescence.” Basically, instead of the color of light being reflected from the surface of the stone, the light enters the stone, and strikes the twin crystals thus creating the fiery display.