The term "druze of quartz" refers to the size of the crystal formation, so the surface of these earrings have a texture from the crystals.  The druze of quartz formed inside an agate geode creating these lovely gems and silicon is used to get this stunning white color.  What Nature can do!   The drusy earrings are white, sparkly and elegant.  The white pearl accentuates the tone of the white drusy.  Great earring.