Citrine
CITRINE · Sunela

सान्द्रेऽपि रागे प्रभया स्वयैव भान्ति स्वलक्ष्याः स्फुटमध्यशोभाः

Even in its depth of colour, ruby shines by a radiance of its own.

Garuḍa Purāṇa · 1.70.8