Quotation1 Composed entirely of carbon this is one of the hardest gemstones. Quotation2
— Description, Sonic and the Black Knight[1]

The Diamond is a collectible item that appears in Sonic and the Black Knight.


The Diamond is needed to craft the following swords:


  • No: 101
  • ID Point Price: 3
  • Rarity Level: 3/10
  • Item Type: Gem Stone
  • Location: Molten Mine


  1. Official in-game description of Diamond in Treasury, item 101/247.

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