You really can't have a murdery beast living in a school - thankfully this one has got a case of sword-through-the-head, so it won't go around petrifying any more students.
This Basilisk brooch has been handmade in Melbourne, and measures 4cm wide and 9cm long (which is about 1.5"x3.5") with a stainless steel locking pin on the back.
Only one batch of this brooch has been made, and once it sells out, the design will be retired.