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.

The Jack of Hearts, the thirty-ninth card of the Egyptian Tarot, depicts a young blond man, in love, honest and always happy.
It refers to a child when consulting for a very young boy.
If the consultant is a young girl, single or divorced woman, this card represents her lover.
For married or elderly people, as well as for a single person or a widower, the Jack of Hearts is the symbol of a sincere, kind, skillful, beneficent, brave and well-mannered friend.

The Jack of hearts having on the right a
Spade ♠: Happy friend who will care about you.
Heart ♥: A young blond man will court you; you can say “yes” to him, he is honest and good. – It also means perfect contentment.
Diamond ♦: Joy in the city. – Visit of a child from out of the town.
Club ♣: Prosperity. – Long live a happy life. – Happy change of your situation in life.

Having on the left a
Spade ♠: A young blond man is sad that he can’t win you over.
Heart ♥: Serious and rich suitor. – New friendship.
Diamond ♦: News from a sincere friend. – An evening out.
Club ♣: Joy. – Fortune is coming your way.

EXCEPTIONS.
With another Jack: Meeting of two young people; the other card next to the Jack of hears is silent; it does not speak.
After a queen: Certain relationship or marriage.
Between two Spades: Delay for a wedding or marriage proposal.

The Ten of Hearts, taken in isolation, means new plans. It is also a card related to the city that you live in.
It is a happy card which, according to the cards surrounding it, means: Success, joy, surprise, triumph.

Having on the right a
Spade ♠: Triumph. – You will take revenge on all your enemies.
Heart ♥: Joy. – Success in love.
Diamond ♦: Surprise coming from far away (from another town or even from another country).
Club ♣: Success in business.

Having on the left a
Spade ♠: New plans and projects implemented.
Heart ♥: Very great joy in your city.
Diamond ♦: Travel for happy change.
Club ♣: Success of all your projects.

EXCEPTIONS.
Between two cards of the same value: Departure of a friend. You will slowly drift apart.
With the King of Spades, the Ten of hearts cancels all the bad predictions of the other cards and it is a good idea to shuffle the cards and consult them with a fresh mind.