The Saint Quartz Fragment serves only as a crafting material for certain Holoitems and has no other practical use. Despite the Saint Quartz Fragment having an enchantment glint applied to it, it does not contain any actual enchantments.
The Saint Quartz Fragment does not belong to any specific Hololive member's collection. It is however used in the Saint Quartz Block.
Unlike other crafting items, Saint Quartz Fragment must be obtained via playing a minigame after each time the Ender Dragon is slain. An endstone head will spawn and upon breaking it will spawn a crystal and a block underneath it. the player may hit either of these to advance the minigame. The crystal can be hit with anything, but if the crystal is hit when a blast resistant block is underneath it, the mini game ends. Hitting the blocks on the bottom advances the minigame but they must be hit with their corresponding tool, (Pickaxe, Axe or Shovel) and hitting the block with the wrong tool does not end the minigame. The minigame ends after 30 seconds if the player does not mess up. Upon completing the minigame by either messing up or finishing the 30 seconds, they will be awarded Saint Quartz Fragments based on how many blocks and/or crystals they've accurately hit. This can range from as little a 0 up to 3.