జ్యోతిషంలో మరకతం (పన్నా): బుధుని రాయి — మేధస్సు కోసం బుధ రత్నం

Classical Basis of Panna as Budha Ratna — Vedic Text References and Quality Standards

Panna (Emerald) is the ratna prescribed for Budha (Mercury) in classical Vedic Jyotish, corresponding to the graha governing buddhi (intellect), vak (speech and communication), vyapara (commerce), and the nervous system. The Brihat Samhita of Varahamihira (Chapter 80) describes the ideal Panna as having a deep, even green colour free from yellowish or bluish tinges, high transparency, and a lively inner brilliance (kantimaya). Inclusions are critically evaluated in Panna more than in almost any other gem: the Ratna Pariksha classification identifies dosha categories including feathers (pataka), black spots (kala bindu), red veins (rakta rekha), and surface pitting — all of which reduce the gem's transmissive capacity. Historically, the finest Panna originates from Colombia (Muzo and Chivor mines), with Colombian stones commanding the highest esteem among contemporary Jyotishis due to their vivid colour saturation and minimal secondary colour. Zambian Panna, with its slightly bluish-green tint and often excellent clarity, is accepted as a strong secondary source. Traditional quality Sanskrit treatises classify Panna from Marayat (Egypt), Mani Pur (Myanmar), and the Deccan regions of India. A minimum of three rattis is prescribed, with five to seven rattis preferred. No oil-filling or resin treatment should be present — Colombian emeralds are notoriously prone to enhancement, making laboratory documentation via GIA or GRS essential.