# Charcoal Diamond Charcoal Diamond is a straightforward mana rock from Crimson Vow Commander, offering black and red mana acceleration in a format where such utility matters. Collectors view it as a functional reprint in a long line of diamond artifacts, making it unremarkable from a design perspective but useful for players building multicolor decks on a budget. The card's common rarity and limited availability as nonfoil only means it holds minimal collector appeal. Most interest comes from Commander players seeking affordable fixing rather than enthusiasts chasing variants. It represents the kind of utility piece that fills deck slots without commanding attention in the secondary market.