The Sapphire Hook is a gemstone variant of the Grappling Hook. This is a viable alternative to the regular grappling hook for those who have a stockpile of Sapphire or find many while mining.
It costs 15 Sapphires to craft at an Iron Anvil. It also has a slightly further reach than the grappling hook.
Same as the other hooks, when a player grapples on to a door and opens the door, they will simply launch or get thrown out.