March 10: The King of Diamonds ♦

People born on March 10 have the King of Diamonds as their cardology birth card, with the Four of Spades as their planetary ruling card.
The sovereign of the deck — authority, mastery, and leadership
In the Cardology tradition, every birthday resolves to one card in a symbolic calendar read through a standard deck. For March 10, the arithmetic is:
Your life domain is Values & Resources — the question your card keeps asking is "Is this valuable? Does it serve my goals?" Read the full profile on the King of Diamonds page.
How to use this March 10 page. Treat the King of Diamonds as a fixed birthday map for people born on March 10: note the suit domain, then the ruling card and karma links below. Compare one real relationship through the compatibility matrix, or recalculate any date with the birth card calculator.
The ruling card for March 10
Two people can share a birth card and still move through the world differently — the Planetary Ruling Card is why. For March 10 specifically, the ruling card is Four of Spades. The birth card is who you are; the ruling card is how you come across.
Karma cards for the King of Diamonds
Your challenging karma card is the Three of Clubs — the shadow pattern that runs you under stress. Your supporting karma card is the Seven of Spades — the evolved gift you grow into.
The psychology underneath
What this card claims: “I provide masterful leadership with resources.”
What tends to actually run it: Financial kingdom compensating for emotional poverty; success as distraction from emptiness.
The three states of the King of Diamonds
- Sweet spot: You're commanding financial systems with authority and wise stewardship.
- Running under: You're financially withdrawn, afraid to wield power while hoarding resources.
- Running over: You're ruthlessly greedy and tyrannical, exploiting others for financial gain without conscience.
Watch: the shadow of the King of Diamonds
The Shadow of the K♦ - The Wealthy King — a deterministic shadow reading of this card.
Life path cards
Seven cards shape how the King of Diamonds' energy expresses across life's domains:
- Mercury — Six of Hearts (how you think and communicate)
- Venus — Four of Clubs (how you love and what you value)
- Mars — Two of Diamonds (how you act and handle conflict)
- Jupiter — Jack of Spades (where you expand and find luck)
- Saturn — Eight of Clubs (where you are tested and grow)
- Uranus — Six of Diamonds (where breakthroughs arrive)
- Neptune — Four of Spades (where you dream — and can fool yourself)
Take your birth-card pattern deeper.
Three hand-written readings, each a private, custom-written PDF in your inbox within 7 days:
- The Chemistry Check — $97 (for two people): how you are both wired, where you click and where you clash, and where your years cross over the next 12 months.
- Your 12-Month Timing Map — $137 (you + 2 key people): your seven dated seasons for the year, and when your two people show up in it.
- The Family Snapshot — $179 (you + 3 family members): how everyone is wired, the alliances and fault lines, and this year’s family radar.
Birthdays that share this card
Same birth card, different ruling cards: