I think I understood something wrong:
assets/tekklands/blockstates/block_ore_tekknium_infused_diamond.json: (Blockstate)
{
"forge_marker": 1,
"defaults": {
"model": "cube_all",
"transform": "forge:default-block"
},
"variants": {
"inventory": [
{
"textures": {
"all": "tekklands:blocks/tekknium_infused_diamond_ore"
}
}
],
"normal": [
{
"model": "tekklands:block_ore_tekknium_infused_diamond"
}
]
}
}
I didnd't change the the model json but now it is this big block without any texture or model.