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 one of the "Big Three" precious stones alongside Ruby and Sapphire.Key Features of Panna (Emerald)Vibrant Color: Known for shades ranging from pale to deep "Royal Green." The most prized color is a vivid green with a slight bluish undertone."Jardins" (Natural Inclusions): Almost all natural emeralds have tiny, moss-like internal inclusions called Jardins. These are not flaws but 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.Astrological Power: Ruled by Mercury, it is believed to sharpen the intellect, improve communication (speech), enhance memory, and bring success in business.