I was going over the spells on this site and came across one called, I believe, "to activate your power" and it mentioned Gemini witch. It called out to me maybe because I am a Gemini, not sure. Does it even have to do with your sign as a Gemini? Also was mentioned about using your twin. I tried looking up information but could not find anything and the person who wrote the spell was not available. I'm also not sure how to copy and paste links to these forums. Which is a whole subject in itself.
In all likelihood this information comes from fiction. The description matches a fictional coven from the show Vampire Diaries called the Gemini Coven/Gemini Witches who revere twins. The show was originally a book series which may also contain this coven info/concept. There is a chance this plot in the show was loosely inspired by a real life phenomenon but I feel likely this Gemini witch concept described on SoM is inspired by the fiction.
Re: What is a Gemini Witch??? By: Lark Moderator / Knowledgeable
Post # 5 Mar 23, 2017
Having looked at the link you provided I must agree with Wind_Kitsune. Clearly this is a concept drawn from fiction and not from an actual tradition of Witchcraft.
There are also a number of sites which rather jokingly talk about the characteristics of Witches depending on the Zodiac sign under which they are born. But again, this is just for fun and does not represent any actual tradition of Witchcraft.
Thank you just didn't want to waste my time and effort looking into a path that doesn't exist. That's why I like to make my own spells. It means more to me and the outcomes are always better. Ill be moving on to my next venture. Studying pendulum readings.