This is a real, authentic Dilithium Crystal that was used on Star Trek. Eack one comes with a COA from the son of the original Scotty (Chris Doohan).
I think this one sells for $69.95, but they have some as low as $19.95. Pretty cool item.
I’m not a Trekkie but love that these crystals that were actually used on the show are being sold. It makes it extra great that the seller is the son of the original Scotty! Excellent find.