It is connected with planet Venus. The metal it is associated with is platinum/silver. It rules over throat, eyes kidney and reproductive system. It can be worn by those whose ascendant is Cancer, Leo, Virgo, Capricorn and Aquarius. It is worn in middle finger.
Diamond is the gemstone recommended for Venus. It increases artistic and creative abilities. It can also lead toward love and devotion in relationships and may also increase passion and sexual desires. Physically, it strengthens the reproductive system, and is said to aid in the treatment of chronic diseases. White, or colorless, sapphire is a good substitute for diamond and may be used in the same manner.
Major sources of diamonds are Africa (many countries there are producers), Australia, Russia, India, Indonesia, Venezuela, Brazil and Guyana. White sapphires are mostly found in Sri Lanka.
Individuals should be careful of wearing a diamond or white sapphire that has any dark flaws or fractures. If a gem with such imperfections is worn it will cause havoc in a person's life, rather than the beneficial influences being sought. Diamonds should weigh at least 1 carat, but 1.5 to 2 is better. White sapphire should be at least 2-3 carats.