nugget of information/wisdom etc
From Longman Dictionary of Contemporary Englishnugget of information/wisdom etcnugget of information/wisdom etcPIECEa piece of valuable information, advice etc It took months to extract that nugget of information from them. → nuggetExamples from the Corpusnugget of information/wisdom etc• Knowledge Adventure is very good at throwing out nuggets of information, and placing them into some sort of context.• The room grew silent as we all digested this nugget of wisdom.