RAW PYRITE STONE THE GOLD OF FIRE

Bṛhat Samhitā (Ch. 56: Ratnādhyāya)

Varāhamihira notes:

“Sūryasya tejomayaṃ ratnaṃ pītavarṇaṃ śubhapradam |”
The gem radiant like the Sun and of golden hue bestows auspiciousness.

Pyrite’s golden metallic gleam qualifies as a Saurya Ratna, capable of invoking the Sun’s beneficence—wealth, vitality, and prestige.