Neelam or Blue Sapphire is the blue color variety of the mineral family Corundum. According to Indian Vedic Astrology, blue is the color emitted by the planet Saturn (Shani). Hence, Blue Sapphire is associated with planet Saturn (Shani). It is generally worn to reduce or remove the malefic effects of Shani (Saturn) in a person's planetary position or horoscope.
Before you wear a Blue Sapphire, it is always recommended that you consult with a learned and qualified astrologer and get your horoscope analyzed by him/her.
According to the Vedic astrology, Saturn is the lord of signs Capricorn and Aquarius. Hence, people born in these signs can wear Blue Sapphire (Neelam) gemstone. People wearing Blue Sapphire stone are advised not to wear Ruby, Red Coral or Pearl gemstones with it. In exceptional cases where you are recommended to wear any of these gemstones also, wear it either on different hand or as a pendant on your neck.
There are many myths & stories about Blue Sapphire (Neelam) gemstone that it can make Rich-a-rag and vice-versa, etc. However, these are only myths and one must only rely on the consultation from a genuinely experienced astrologer. Yes, it is true that Blue Sapphire does not suit everybody. However, if you really want to wear a beautiful Blue Sapphire, you can try keeping it with you for 72 hours with you and if you see any negative effects such as any kind of ache in your body or head, itching on your fingers, leg pain, etc within the time frame, you may better not wear it.
If one still wishes to wear it, we advise to cover your blue sapphire with a metal and wear it in a manner that the stone does not touch your skin and transfer its energy.