Six spools of shimmering thread coordinate perfectly with MJ Kinman's March Aquamarine Fat Quarter Set eQuilter product code FAFQBAQU to complete the Birthstone Series pattern eQuilter product code MJPATAQU. 80/12 needle recommended. 'MJ Kinman Birthstone Series - March Aquamarine' Thread Set, includes six 250 yard spools of 40 wt Sulky Rayon Thread.