The phrase "a unique concentration of" is correct and usable in written English.
It can be used to describe a specific and distinctive gathering or accumulation of something, often in a particular context or location.
Example: "The city is known for its unique concentration of cultural institutions, attracting visitors from around the world."
Alternatives: "a distinctive cluster of" or "a remarkable gathering of".
A unique concentration of banks from every corner of the globe allowed an exceptional range of currencies to be traded.
A quarter of Britain's 283,000 Bangladeshis live in Tower Hamlets: a unique concentration of a single ethnic minority in one local authority.
But during the late 1990s, these protections seemingly failed, and a unique concentration of financial scandals followed, all involving the common denominator.of accounting irregularities.
All but one of our research facilities are within 5-10 minutes walking distance from each other, including the School of Engineering and the Stanford Hospital, thereby providing a unique concentration of a large variety of high quality resources and scientists that enable interdisciplinary basic and translational research.
Ravenna is home to a unique concentration of Christian mosaics from the fifth and sixth centuries, and seven of the eight monuments that earned the city a place on Unesco's World Heritage List did so primarily for their superb ancient mosaics.
"At a time of national and global shortages in key technical skills and engineering expertise, north-west Wales offers a unique concentration of scarce and sought after skills for employers to tap into," she said.
Our bedrock and unconsolidated models enable the prediction of a unique concentration for each residential and workplace well, allowing flexibility in epidemiologic analyses beyond that provided by a dichotomous metric.
Dissenting voices also claimed the unique concentration of this London season has exposed flaws in Bausch's work.
Regions of the seafloor including the Clarion-Clipperton Fracture Zone, the Prime Crust Zone, and inactive or waning hydrothermal vent systems have attracted attention for their unique concentration of metals used in electronics and strong magnets.
In northern Peru, areas near the cities of Iquitos and Tarapoto host unique concentrations of endemic plants.
And as an operatic proposition, King Roger is an evening of unique concentration and attraction.
