Gain luck, health, wealth and happiness and get rich. Gems or precious stones bring luck or influence of those planets ruling them. If you have continuous streak of bad luck, it might be sometimes due to wrong choice of gems that are not suitable to your personal signs and numbers. Varaha Mihira, the famous astrologer of ancient India

(1st century BC) has devoted a full chapter to gems and precious stones in his monumental work Brihat Samhita, a treatise on Vedic Hindu Astrology

You can choose the lucky gems or stones suitable for your signs - sun sign, moon sign (Rasi), star (nakshatra), and dasa (period) and birth number (numerology) to get luck and favourable disposition of planets (Astrology) and numbers (Numerology). If you know the signs, lords of signs, ruling planets of dasa, birth number etc.
 

Tips for Wearing Precious Stones and Gems. The correct procedure that should be followed is explained here. The stone or gem should be worn in such a way that a part of the surface touches the skin and the other is exposed to atmosphere. The jewel may be studded in a ring.

Caution!! Any gem or precious stone should be initially worn for three or four days trial period.

If its beneficial effects are evident and favourable, it may be worn permanently. The blue sapphire, the cat's eye and gomed are very potent. It may also happen that particular piece may be faulty and adverse things happen in which case you may stop wearing the piece and return it.