minecraft-assets/data/minecraft/recipes/emerald_from_blasting_emerald_ore.json

{
  "type": "minecraft:blasting",
  "category": "misc",
  "cookingtime": 100,
  "experience": 1.0,
  "group": "emerald",
  "ingredient": {
    "item": "minecraft:emerald_ore"
  },
  "result": "minecraft:emerald"
}