As the gopis and Krsna danced together, a very blissful musical sound was produced from the tinkling of their bells, ornaments and bangles. It appeared that Krsna was a greenish sapphire locket in the midst of a golden necklace decorated with valuable stones. While Krsna and the gopis danced, they displayed extraordinary bodily features. The movements of their legs, their placing their hands on one another, the movements of their eyebrows, their smiling, the movements of the breasts of the gopis and their clothes, their earrings, their cheeks, their hair with flowers — as they sang and danced these combined to appear like clouds, thunder, snow and lightning. Krsna's bodily features appeared just like a group of clouds, the gopis' songs were like thunder, their beauty appeared to be just like lightning in the sky, and the drops of perspiration visible on their faces appeared like falling snow. In this way, the gopis and Krsna fully engaged in dancing.
>>> Ref. VedaBase => KB 33: Description of the Rasa Dance