Jambu river gold, the purest gold in this world, said to originate from the uneaten fish transformed from the Jambu-briksa fruits by the naga king in lake {ma dros mtsho}; Jambu river gold, the purest gold in this world, said to originate from the uneaten fish transformed from the Jambu-briksha fruits by the naga king in lake {ma dros mtsho}