Jedi spinel is a type of gemstone that bears the word "Jedi" in its name, but is not the official gemstone name. In fact, there is no gemstone named "Jedi Spinel".
The term "Jedi Spinel" is a fictitious gem used for the fluorescent red spinel and named after the weapon called the lightsaber wielded by the Jedi Order of Justice in the Star Wars series. Star Wars fans sometimes refer to red gemstones as "Jedi spinel," but this is a fictional term and not a common term in the real gem market.
And, importantly, those with red lightsabers are an evil group called the Sith.
Not a Jedi. Therefore, it may be cis spinel in the true sense.
There is a red spinel among gems, but it is not called "Jedi spinel". Spinel has a uniquely beautiful hue and can exhibit a wide variety of colors, including red spinel.
In short, the term "Jedi Spinel" is a term associated with Star Wars fiction and does not exist as an actual gemstone.