Blue Sapphire is the gemstone of Saturn as per Vedic Astrology. Among all the nine astrological gemstones, Blue Sapphire is the strongest and the fastest acting gemstone. For many individuals it shows effects instantly by way of gain in wealth, resolution to a problem, windfall gain etc. Emerald is the gemstone for May and is the gemstone for planet Mercury. As the name suggests, there can be a mercurial rise in life. A person who wears an emerald gemstone gets intelligence, name and fame. Ruby is the stone of lord sun and helps in concentration of mind . Natural ruby is red in color and it is often associated with passion and love. Rubies are often gifted as a mark of undying love. Wearing this gemstone encourages you to listen to your heart and work towards fulfilling your dreams.