Here are some of my musings on the King of Diamonds...
The King of Diamonds has a quick wit and a keen mind. He is very intelligent, and he isn't afraid to use his mind to his own advantage. He might be a scientist or an inventor. He may be a mathematician. Perhaps he's a techno-wizard. He could be psychologist or a social worker. He may be surrounded by money like a banker or even a millionaire. He may be a government official or civil servant. Whatever his line of work, he is independent and dynamic. He is always cultured and professional in his dress and demeanor.
The King of Diamonds brings positive energy to a reading. He has a sunny disposition. He is the eternal optimist. He is generous with money and his expertise. He's edgy and innovative, and he is filled with energy and enthusiasm. He enjoys the luxuries of life, but is always tasteful.
When surrounded by negative cards, he may display his more unfavorable characteristics. He may be shy and withdrawn. He can become restless and impatient, and filled with nervous energy. He can be overly extravagant and self-indulgent on the one hand, and selfish and miserly on the other. When crossed he may become aggressive, and his behavior can be impulsive and unpredictable.
I associate the suit of Diamonds with the element of fire. Diamonds are quick moving, and restless and represent both physical and spiritual energy. Specifically, the suit of Diamonds represents both the spark of a flame, and the spark of life. If you are familiar with astrology, you can consider the King of Diamonds to be a fire sign: Aries, Leo or Sagittarius, both in nature and literally speaking.
The King of Diamonds is a scholar. This is important because he can represent formal education in a reading. Whereas the 3 of Clubs can indicate taking a class or receiving training, the King of Diamond would show pursuing a degree, usually from a college or university.
The other important meaning of the King of Diamonds (KD) is that he can represent government in a general sense. For example, the KD + 2D shows receiving a payment from the government (social security check, tax refund, etc.). But be careful if the same combination appears reversed. 2D + KD can show a payment made to the government, but it can also represent paying tuition to a college or university.
In a daily draw, the King of Diamond may represent a man who will play an influential role in your day. He may also represent the general trends you can expect to unfold. When I see the King of Diamond in my daily cards, I know it will be a busy day filled with energy and opportunity. If I take advantage of this positive energy, I can take the next step toward reaching my goals.