Is Fire Diamond legal in Standard, Modern, and Commander?

Fire Diamond is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Fire Diamond?

Fire Diamond is an Artifact. Its oracle text reads: "Fire Diamond enters tapped.{T}: Add {R}."

Artifact

Fire Diamond enters tapped.<br>: Add .

Set Mirage

Rarity Uncommon

Artist Richard Thomas

Artifact Commander Pauper Legacy