Neelam, also called blue sapphire, is a fast-acting stone, but that doesn't mean it gives results in a few seconds. An original Neelam ratna takes 2 days (48 hours) to 7 days (168 hours) to show its effects. These effects can be positive or negative. It all depends on the wearer’s energy. If it suits you, it will give you positive results, or else negative results can also follow. Many people wonder, When Does Blue Sapphire Start Showing Effects? The answer varies from person to person based on their birth chart, the gemstone’s authenticity, and the way it is worn. In astrology, natural Blue Sapphire is believed to begin showing its effects within a few days to a few weeks. Positive changes may include improved focus, confidence, career growth, and financial stability. For the best results, always wear a certified natural Blue Sapphire after proper astrological guidance.