The phrase "assortment itself" is correct and usable in written English.
It can be used to emphasize the variety or collection of items being referred to, often in a context discussing the nature or quality of that assortment.
Example: "The assortment itself was impressive, featuring a wide range of colors and styles that appealed to every taste."
Alternatives: "the collection itself" or "the variety itself".
The excellent cast is as comfortable with the absurdity as with the suggestions of desire and supplication in the dance, which is itself an uneven assortment of elements.
To achieve its stellar growth, the company had followed a no-frills, limited assortment model and had restricted itself to limited geographies within the country.
In sumptuous language, Jeet Thayil's Narcopolis (Faber) depicts the hallucinogenic sensibilities of those trapped in the opium rooms of Mumbai and by extension, the city itself, with its assortment of broken and stranded people, doomed to live in the shadows.
The neck took center stage for fall, surrounded by an assortment of turtlenecks and collars that encased itself much like a protective wall.
Danny needs a team for this mammoth job, which will call for an assortment of cons to set up the robbery itself.
It gives us the chance to rethink how we build tall buildings, making them functionally and environmentally superior, conserving energy, providing a humanized environment in which to live and work, and encompassing an assortment of uses as varied as the city itself.
My favorite single item was a lentil kofte, part of the huge mezze assortment that is a wise appetizer choice, or by itself.
Jet.com, the e-commerce site Walmart acquired in 2016 for $3 billion, is relaunching itself today with an upgraded look and assortment, as well as a stronger focus on serving the needs of shoppers in urban metros.
The main story -- set in contemporary New York City and rural Maine, and involving an assortment of artists, yuppies and slackers -- does not lend itself comfortably to her gothic imagination and melodramatic turn of mind, leading to some absurdly contrived story lines and a predictable conclusion that the reader can see coming a mile off.
With its assortment of large swiveling doors, the Storefront is an (environmental) artwork itself, especially when these apertures are swung wide to the glorious, if skittish, spring weather.
