In cartomancy with playing cards, the Seven of Diamonds (7♦) is the card of gain.

All sevens in cartomancy are cards of achievement. The suit of Diamonds is the second-best suit following that of Hearts in terms of concrete results, and definitely the best for material achievements. Therefore we are talking about financial achievement, also known as gain.
In general, the Seven of Diamonds represents a reward for a job well-done in all fields of life. It represents rewards and awards of all kinds. Figuratively (and if relevant, literally) it is the card of harvest. In itself, the money that the card represents is not lucky money, but earned money. However, this may be superseded by other cards or by the context of the question.
Because the Seven of Diamonds represents earnings, it can stand for the querent’s job, if relevant to the question. Or it can show what happens to the querent’s earnings, i.e., where they are directed, if they increase or decrease, etc. In itself, this card can represent an increase, such as a pay raise or having more business than usual. In money matters, the card stands for a good sum of money, though not huge. The other cards will tell you what happens to this money.
In love readings the card does not speak of feelings. However, it can hint at common projects that the couple has, such as investing money into a common home, and this in itself brings a strengthening of the couple. It also represents, with negative cards, that the couple stays together out of financial convenience, or that one of the two married the other for money.
Psychologically the Seven of Diamonds represents security and a business-minded individual.
Some Combinations:
5♣ – 7♦ – A♦ = winning a first prize in a competition
7♦ – A♥ = investing money into a house (can be for renovations or renting or buying. If the cards are swapped, it can represent a property house, especially one that the querent earns money from by renting it out)
8♣ – 7♦ = good earnings or a raise
3♣ – 7♦ = a good contract or lucrative marriage
9♣ – 7♦ – 9♠ = the long awaited money won’t come










