It is the most expensive gemstone in the category of gemstones. The most auspicious diamond is one that is colourless with a blue tinge or one, which sprays blue, and red rays and is without black dots. The Diamond with a red or yellow hue or tinge is said to be beneficial and auspicious for kings, political leaders and administrators. The Diamond having a white hue is suitable for religious, social and spiritual works. The Diamond of yellow hue showers success and prosperity. The Diamond of black hue is suitable for people who are engaged in inferior jobs or professions.

Inauspicious Diamonds
I) Dots: - The appearance or an impression of a dot on the Diamond is a major flaw in the 
   diamond. Black dots are considered inauspicious in a diamond.
II) If there are dots like the criss crosses then such diamond is considered inauspicious and is 
    believed to bring death to its wearer.
III) If the yava shaped dots are on the diamond then it becomes inauspicious except when the 
    dots are white in colour

Who Should Wear A Diamond
Diamond is the gemstone of Venus. It will be beneficial for natives in whose birth chart Venus is lord of auspicious houses.