Indranīla (Blue Sapphire): Source-Myth, Grades, Tests, Substitutes, and Price
परीक्षाप्रत्ययैर्यैश्च पद्मरागः परीक्ष्यते / त एव प्रत्यया दृष्टा इन्द्रनीलमणेरपि
parīkṣāpratyayairyaiśca padmarāgaḥ parīkṣyate / ta eva pratyayā dṛṣṭā indranīlamaṇerapi
By whatever tests and criteria a Padmarāga ruby is examined, those very same criteria are likewise applicable for examining an Indranīla sapphire.
Lord Vishnu (in dialogue with Garuda/Vinatā-putra)
Concept: Epistemic consistency: criteria (pratyaya) used to test one gem can be applied to another analogous gem.
Vedantic Theme: Pramāṇa-vyavasthā: disciplined means of knowledge in vyavahāra; emphasis on parīkṣā (examination) to avoid bhrānti (error).
Application: Use established gem-testing protocols (visual clarity, color, flaws, hardness/other traditional criteria) for sapphire as for ruby; consult competent experts and avoid fraud.
Primary Rasa: shanta
Related Themes: Garuda Purana 1.72.10 (parīkṣā-pratyaya for padmarāga and indranīla)
This verse stresses that reliable criteria (pratyaya) should be applied consistently—valid tests used to judge one case can be applied to another similar case as well.
Indirectly, it teaches methodological clarity: just as gems are verified by known tests, teachings about dharma, karma, and post-death outcomes should be assessed with consistent standards rather than confusion or bias.
Use consistent standards when evaluating claims—whether spiritual guidance, ritual instructions, or ethical decisions—so that judgment remains steady and not swayed by appearances.