1. Are the gemstones effective remedies ?+

Yes. Provided they are properly and appropriately cleansed and energized.

2. Is there any thing called lucky stone ?+

No. Astrology does not believe in luck. Stones are like medicine and should be treated as such.

3. Can a priest or an Astrologer energize the stones or carry out remedial prayers on behalf of a native ?+

No. Since afflictions are due to one's own 'Poorva Karma', no one else can substitute for him.