Lapis Lazuli Faceted Microbead NecklaceThe facets catch the light in flashes: blue, then a glint of gold, then blue again. Each microbead in this necklace is cut from lapis lazulithe aggregate rock of lazurite, calcite, and pyriteand faceted to maximize the interplay of its deep blue color and naturally occurring pyrite inclusions. Faceting lapis lazuli requires a fine touch: at Mohs 5 to 6 it is softer than most faceting materials, and the mixed mineral composition demands careful cutting