Recycling Trinkets

Unwanted or duplicate Trinkets can be recycled to obtain Unknown Fragments.

Right-click a Trinket on an Amethyst Block to break it down into Unknown Fragments.
If the Amethyst Block is unavailable in your version, left-clicking a Trinket on an Enchanting Table will have the same effect.

Once you collect 9 Unknown Fragments, you can craft a Mysterious Trinket, which grants you a random Trinket when used.