Isolated, the Jack of Diamonds represents the postman or, better said, the messenger. It also symbolizes a young soldier or an unfaithful servant (assistant, employee); sometimes a young blond man, traitor and of bad morals.
If the consultant is a young man, it is the announcement of new lovers.
If it is a young girl or a single woman, it is the certainty that, soon, a suitor will make himself known; he will be blond and pretty boy.
If, on the contrary, the consultant is married, he will soon learn of a somebody’s else marriage; but this card, surrounded by it, has many and varied meanings.

The Jack of Diamonds with a
Spade ♠: Treachery, infidelity.
Heart ♥: Certainty of marriage and news of birth.
Diamond ♦: Young risk-taking man, adventurer of misconduct.
Club ♣: Somebody will ask to borrow money from you.

Having on the left a
Spade ♠: A dark man you have every reason to fear.
Heart ♥: Love. Letter coming soon.
Diamond ♦: Null card.
Club ♣: Money that will be lost. Theft.

EXCEPTIONS.
The Jack of Diamonds, with the
King of Diamonds: News from a young adventurous man.
Between two sevens: News of a pregnancy.
Touching the Ten of Diamonds: Distant journey. (The other card touching it becomes null and void.)
Touching the ace of Clubs: News of an inheritance. (The other card touching it becomes null and void.)
Between two face cards: deceit, treachery, infidelity.
Between two aces: The Jack of Diamonds says nothing; he is absolutely silent.

Travel, change, certain displacement. This card has always been considered as announcing to the consultant a rather happy omen.
It tells him that something will happen in his life that will force him to move away for a longer or shorter period of time.

Having on the right a
Spade ♠: A trip that will not be free of annoyance.
Heart ♥: A small matter of heart.
Diamond ♦: Bad travel in all respects.
Club ♣: Travel on business of interest.

Having on the left a
Spade ♠: A change will occur that is no better than your current position.
Heart ♥: A friend’s journey.
Diamond ♦: Visit before the end of the week. – Leaving the town.
Club ♣: Certain inheritance.

EXCEPTIONS.
Between two club figures: Happy change in position.
Near the Nine of Hearts: Visit of people from the countryside or another town. (The other card touching ten of diamonds becomes null and void.)
Near the Nine of Spades: Travel to attend a funeral.

Isolated, this card represent the consultant, especially If the consultant is young woman; otherwise, it means: Good news, success.
This Eight of hearts assures the young consulting woman or man that they will certainly get into a long-term relationship with the person they love. If this relationship leads to a marriage, this new family will be free of domestic sorrows and misfortunes;
To married people, it indicates great satisfaction that will come from their children;
To the elderly, a long and happy old age free of illness;
To the divorced or widowed person: it means that they will never get married again (however, they can still be in a fulfilling relationship. It’s just that the marriage is not in the cards);
To the young girl or woman, Nine of hearts means that she will be dating someone soon and this will lead to a good relationship.

Having on the right a
Spade ♠: Success in all your desires;
Heart ♥: For a young man: You will marry a very kind young blonde.
For a young girl: You will marry a charming and honest blond.
Diamond ♦: Good news from out of the town or abroad.
Club ♣: You will win or be given a sum of money. – You will succeed in your business.

Having on the left a
Spade ♠: You will learn about some terrible event.
Heart ♥: The loved one will come to you. – Perfect satisfaction.
Diamond ♦: A relationship of short duration. – New love. – Pleasurable holiday trip.
Club ♣: Success in all your business, whether in love or commercial.

EXCEPTIONS.
Between two cards of the same value: Something will make you joyful quite soon.
Between two Spades: Indifference.