Worth your/its weight in gold
Definition 1 of 1
Pro Tip 1/3Figurative Value
The phrase suggests something's value is immeasurable, like gold, but is not about actual weight. 
Her advice during crises is worth its weight in gold.
Pro Tip 2/3Positive Emphasis
Use this phrase to express a high level of appreciation or value for someone or something. 
A reliable car in this remote area is worth its weight in gold.
Pro Tip 3/3Non-Material Worth
It often refers to non-material qualities, like friendship, trust, or skills. 
A doctor who listens is worth her weight in gold.