According to Our Vedic Literature Bad and Unfavourable effects of 9 planets in Our Horoscope can be Remedised by the Following
Puja / Yagya/ Chanting of Mantras (Jaap)
Malefic Effects of Negetive Planets can be cured by Chanting 1000s of Beej Mantras related to that Particular Planets Daily till a Certain Number of Mantras is achieved, for eg. If Shani Garh / Planet Saturn is Malefic in your Horoscope then you shall Chant 23,000 Mantras Yourself to Please Lord Shani Dev. This Amount can be Divided in Particular Number Daily Chanting Like 108, 1008 etc. But it has to be Regular on a Particular Time. In this Process a lot of Patience is required, you should have complete attention towards god and Pronounciation should be Correct to have Fruitful Results. When you Complete that Certain Amount you should perform a Yagya / Homam at Home for that Particular Garh Devta.
Result - The Result Varies and Depends on the Worshippers Faith and Patience, If God will be Pleased he shall Grant your Wish.
Mantra Healed Gem Rings
In the Case of Mantra Healed Gem Rings, If you wear Suitable Gem Rings After it's Mantra Healing in 3 Different Stages, it will absorb and reflect Back the Negetive vibrations of that malefic planet and will allow only the positive effects reach to You. It will create a Special Aura of Protection Against you and if any Big Problem or Mis happening will come towards you then this Mantra Healed Ring while Protecting you, will get Damaged or Lost.
Result - Mantra Healed Gem Rings are best suited for those who want Fast & Effective Results and Do not want to spend time on Prayers and Rituals and Several Restrictions.