One thing I can guarantee is that blue and yellow sapphires worn together will not have any chemical reactions producing any ill effect. As regards their influence on planetary positions and the results you get therefrom, it is Nil. Gems and precious stones will not make any change in your future, however for the present you will waste a lot of money. Read my blog navagrahastro.blogspot.in
You know that your horoscope has got some bad placements.
Do you think that you can change your fate by wearing one
or two stones ,costing a few thousand rupees.
Some astrologers prescribe stones to enrich jewellery shops.
Penance is better method to reduce evil of planets.
YOu have to do penance for 1 or 2 years.
Please read in google-kumrao99 penance method. firstname.lastname@example.org