It took me a while to come up with the answer, specifically.
I received aa amazing gyokuro from a member around 4 years ago. It was so remarkable, truly "precious jade dew." So sweet and pure in flavor.
And it was irreplaceable, he got it from a friend who somehow got it while visiting in Korea. The chain of events was almost as remarkable as the tea.
It was most certainly "precious to me." (LotR ism) And the most amazing part was that this was gifted and regifted several times. Once tasted, I could not imagine being able to give it away.
It was "the one Gyokuro to rule them all"
... (another LotR ism)