Rasendracudamani 14.10

14.10

{gold:: parīkṣā:: good quality}
ghṛṣṭaṃ varṇe ghusṛṇasadṛśaṃ raktavarṇaṃ ca dāhe chede kiṃcit sitam akapilaṃ nirdalaṃ bhūribhāram /
snigdhaṃ svarṇaṃ ravivirahitaṃ styānaraktaprabhāḍhyaṃ śreṣṭhaṃ diṣṭam atulitalasaccāruvarṇaṃ ca svarṇam //

Rubbed, resembling saffron in colour, red-coloured on heating, slightly white and not brownish when cut, flake-free, and of great weight, / unctuous, devoid of copper, rich in a dense red lustre, and of peerless, brilliant, beautiful colour: such gold is said to be the best.