Lunar seekers are a royal bloodline of seekers that date back many eons. This royal bloodline became "royal" because they posses magic/powers that their born with. The first lunar seekers had very powerful magic, but with every generation the power of the magic grew lower. Besides having magic and being royalty just about all lunar seekers have a golden colored optic. Whether both or just one of their optics are gold that's one thing to help tell if a seeker is a lunar seeker.