Wearing the correct gemstone is important because gemstones strengthen the energy of the planets they represent. In Vedic astrology, this can bring positive results only when the gemstone is associated with a planet that is beneficial for your individual birth chart. Wearing the wrong gemstone may strengthen a planet that creates obstacles, leading to unexpected challenges instead of improvements.
The most important factor in gemstone selection is the Ascendant (Lagna). The Lagna determines which planets become functional benefics and which become functional malefics for a particular horoscope. Two people born on the same day may have different Ascendants due to different birth times, and therefore they may require completely different gemstones. This is why recommendations based only on your zodiac sign or Moon sign are often inaccurate.
An astrologer should carefully examine the Lagna, the lord of the Ascendant, planetary placements, house ownership, planetary strength, conjunctions, aspects, and the running Mahadasha and Antardasha before recommending any gemstone. The objective is to strengthen planets that support health, career, marriage, wealth, or education while avoiding planets that may create difficulties.
Looking at your birth chart, we see that your Lagna is Gemini, and you are soon going to enter the Mercury Mahadasha. Mercury is the planet of intelligence, logic, finance, business, and communication. In your horoscope, it also controls health and mental ability. It is strongly recommended that you wear an emerald in silver on your right hand little finger on Wednesday morning for benefits.