7DS Grand Cross Diamond Farming Guide 2026: Every Source, Ranked

Diamonds decide everything in The Seven Deadly Sins: Grand Cross — who you draw, how fast your box grows, and whether festival banners are exciting or depressing. The good news: Grand Cross remains one of the most generous gachas in its class, especially during the current 7th Anniversary season. The better news: most players still leave hundreds of diamonds on the table every month. Here is every diamond source in the game, ranked by value per minute.

Tier 1: The Daily Compounders

The unskippable core: daily missions, the free daily draw bonus structures, and PvP participation. Arena attempts deserve special mention — win or lose, ranked participation pays weekly diamonds, and the medal shop conversion quietly adds more. Fifteen minutes of disciplined dailies compounds into a multi-draw roughly every week, before anything else.

Tier 2: Event Tracks and Anniversary Season

Event missions are the biggest burst income in the game, and the current anniversary era is peak season — Diamond giveaways, login campaigns, the Perfect 7 festival rewards (including 77 Diamonds and selection tickets), and boss event tracks stack simultaneously. The rule: open every event tab daily and clear the mission list, even partially. Event diamonds expire; your regret does not.

Tier 3: The One-Time Goldmines

For newer or returning accounts, the permanent content backlog is enormous: main story chapters (every chapter pays), hard mode clears, Knighthood boss firsts, Final Boss content tiers, achievement milestones, and the Fort Solgres tower floors. A returning player who systematically sweeps one-time content can fund an entire festival banner from the backlog alone.

Tier 4: The Quiet Ones Everyone Forgets

Friendship point chests, village quest boards, the Patrol system (set it before sleep, always), collection registrations in the hero and equipment books, and coupon codes from official streams and social channels. Individually small; together they are another multi-draw per month for zero effort.

Spending Discipline: Where Diamonds Go to Die

Farming means nothing with leaky spending. The classic sins: drawing on regular banners (festival and limited banners only — the rate-up math is not comparable), gear draws (farm gear, never draw it), and impulse single pulls. The veteran rule is brutal and correct: save until a banner you would regret skipping — like the current Hermit Gowther Legendary Sinner draw — then commit properly or not at all.

The Anniversary Multiplier

Everything above is amplified right now. The 7th Birthday celebration's stacked giveaways make this the best diamond-income window of the year — a disciplined month of play during anniversary season equals two or three normal months. Lapsed players: log in, sweep the events, and watch the balance climb.

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