Panna (Emerald) is the gemstone of Mercury (Budh) and is celebrated for its lush green color and powerful intellectual benefits. In Vedic astrology, it is considered one of the "Big Three" precious stones alongside Ruby and Sapphire. Key Features of Panna (Emerald) Vibrant Color: Panna is known for its varying shades of green, ranging from pale to a deep "Royal Green." The color is caused by trace amounts of chromium, vanadium, and iron. "Jardins" (Natural Inclusions): Almost all natural emeralds have tiny, moss-like internal inclusions. These are not considered flaws but are proof of the stone's natural origin. Hardness: It scores 7.5 to 8 on the Mohs scale, making it durable but more brittle than a Diamond or Sapphire. Astrological Power: It is believed to sharpen the intellect, improve communication (speech), enhance memory, and bring success in business and creative ventures.