minecraft-bedrock-json-schemas/source/general/particle/identifier.json

{
  "$id": "blockception.minecraft.particle.identifier",
  "description": "The minecraft particle identifier",
  "examples": ["namespace:particle_name"],
  "pattern": "^[0-9a-zA-Z:_\\.\\-]+$",
  "title": "Particle Identifier",
  "type": "string",
  "defaultSnippets": [{ "label": "New Identifier", "body": "$1:$2" }]
}