A perfect choice for yourself, or as a gift, our Smoky Quartz stud earrings feature sturdy cast basket settings and beautiful sparkling gems. Do you know someone who loves brown? A pair of smoky quartz earrings is a unique and interesting gift for that special someone or for yourself. White topaz is a popular substitute for the birthstone of April, which is diamond. A pair of white topaz earrings is an affordable alternative to expensive diamond studs.