
- BGG rating
- 7.2
Diamonds: The Thief
- 3–6 players
- 20–30 min
- Complexity 2.0/5
- 2016

2014
Rules assistance for Diamonds
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 2 players

What would you like to know?
Answers come from the official rulebook, with the page to check.
Diamonds is a board game released in 2014 for 2–6 players, 20–30 minutes per game, and ages 8 and up. It was designed by Mike Fitzgerald and its main mechanics are Hand Management and Trick-taking.
Diamonds is a trick-taking card game in which players collect Diamonds — not cards bearing that suit, mind you, but rather actual "Diamond Crystals" (acrylic crystals) included in the game. What makes the game of Diamonds different from other trick-taking card games is that when you cannot follow suit you get a "Suit Action" based on what suit you do play. Suit Actions are also taken by the winner of each trick, as well as at the end of a full Round of play. Suit Actions will enable players to take Diamond Crystals from the Supply, moving them to their Showroom (where they may score 1 point) or to their Vault (where they will score 2 points). The Vault is a secure area, but the Showroom is vulnerable to theft by the other players. The deck in Diamonds consists of sixty cards, numbered 1-15 in the standard suits. In each round, the players start with a hand of ten cards. One player leads a card, and everyone else must play one card, following suit if possible. As you play a card, if you cannot follow suit, you immediately get a Suit Action in the suit you did play. The player who played the highest card in the suit that was led wins the trick, and also gets a Suit Action. The player who won the trick leads a card to start the next trick. After a full Round of ten tricks, whoever has taken the most cards in each suit once again gets a Suit Action. If a player has taken no tricks, that player gets two Diamonds Suit Actions. Players then start a new round. Whoever has the most points in Diamond Crystals at the end of the game wins!
Diamonds supports 2–6 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Diamonds is 20–30 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Diamonds for ages 8 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Diamonds has a complexity rating of 1.6 out of 5 from BoardGameGeek players, which makes it a light game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
Diamonds belongs to these categories: Card Game. Its main mechanics are Hand Management and Trick-taking. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of Diamonds are: Mike Fitzgerald. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Diamonds as a base game. It can be played on its own with the components in the box and does not require any other title. Expansions, if any exist, add new content or rules on top of it and are listed separately in the catalogue with a link back to this base game.