The phrase "a gradation of" is correct and usable in written English.
It can be used to describe a range or variation in a particular quality, characteristic, or phenomenon.
Example: "The artist's work displays a gradation of colors that creates a stunning visual effect."
Alternatives: "a range of" or "a spectrum of".
Seats are upholstered in a gradation of reds, cardinal to plum.
(Ombré — a gradation of color — and tie-dye effects have also become popular).
In these situations an ambiguity arises: to whom does the cat really belong, or is there a gradation of ownership?
It is also realistic and concrete, because that is what the sky looks like sometimes – pure solid colour or a gradation of colours.
Designed to continuously represent Earth's terrestrial surface as a proportion of basic vegetation traits, it provides a gradation of percent tree cover.
For comparative purposes similar morphologies, such as quadricaudates, are positioned in one layer, with a gradation of layers from more spiny cells (top) to spineless (bottom).
Teeth are typically composed of a number of colours and a gradation of colour occurs in an individual tooth from the gingival margin to the incisal edge of the tooth.
The branching and elongation of N-glycan chains found on cell surface receptors generates a gradation of affinities for carbohydrate-binding proteins, the galectin, selectin and siglec families.
The recorded schlieren images are characterized by a gradation of hue distribution that is proportional to the strength of the temperature gradients prevailing in the test section.
The copolymers exhibit a switchable mode of primary matrix coupling combined with a gradation of secondary matrix substrate interaction due to a variation of surface hydrophobicity and polarity.
It offers a gradation of levels of assistance that can be fixed by educators or automatically adjusted to the trainee's skills.
