It's possible you're thinking of:
* Celadon pottery: A type of Chinese porcelain known for its celadon glaze, often found in ancient tombs and considered a high-quality art form.
* Celadon, a character from Pokémon: This is a Psychic-type Pokémon that is known for its beautiful, pastel colors and ability to control telekinesis.
* A misremembered author's name: There are many authors whose names are similar to "Celadon". Could you please provide more information or context about the author you are looking for?
Please let me know if you have any other details about the author or the work they might have written. I'd be happy to help you find more information!