Certified Yellow Sapphire (Pukhraj)

Yes, any person with any zodiac sign can wear Yellow Sapphire gemstone. Rest it depends on your birth chart as well that whether you need to wear yellow sapphire gemstone or not. So it is advisable to consult your astrologer for wearing yellow sapphire gemstone.

It depends upon the quality of a gemstone. A good quality gemstone takes around 45 days to show its effects.

Honestly a good quality gemstone lasts for generations. Certain Gemstones have a lifetime of 5 years some have a lifespan of 10–12 years. Now it all depends on the Quality of Gemstones also. As Organic gemstones like Pearl and coral lose their Size and effectiveness very quickly whereas Sapphires and rubies don't lose their Shine so quickly so they have a greater Lifespan.

Yes, Yellow Sapphire can also be worn as Pendant. Astrological Gemstone should be mounted in such a way that it should touch the skin when worn.

Yes, according to Indian astrology, a gemstone can be more powerful if it is enlighten in a proper manner.