Craft an exceptional therapeutic coloring book featuring a captivating collection of black & white illustrations. The artwork should showcase intricate mandalas with low detail and thick lines, designed to provide a calming and meditative coloring experience. Against a pristine white background, these mandalas should be diverse and unique, offering colorists a chance to engage in a deeply relaxing and creative process. Each mandala should possess its own distinct patterns, allowing users to explore the art of mindfulness while adding their personal touch to these intricate designs. The resulting coloring book should inspire a sense of tranquility and artistic accomplishment, drawing users into a world of therapeutic creativity.