The history of Hotel Diament spans over 40 years. The pyramid-shaped building was opened for use around 1978 and 1979, under the name "Sokół" Holiday Resort. The nearby pyramids also received names derived from bird species. In the vicinity, there appeared "Wilga" (Oriole), "Jaskółka" (Swallow), "Orlik" (Eagle), and "Kos" (Blackbird).

Originally, the building was owned by the "Manifest Lipcowy" Coal Mine in Jastrzębie-Zdrój. It served as a rehabilitation, medical, and leisure facility, exclusively available to the mine's employees and their families.

In 1990, the "Manifest Lipcowy" Coal Mine changed its name to "Zofiówka". For the next several years, the building was under the management of this mine. The name was changed to "Sokół" Hotel, and the property was leased to the Jastrzębskie Towarzystwo Gospodarcze "Antracyt" Sp. z o.o. Tadeusz Szafrański became the hotel's director. There were no longer company-sanctioned vacation stays, but the "Zofiówka" mine continued to cooperate with the hotel, organizing various events there.

During the 1990s, our pyramid became a two-star "Sokół" Hotel, accessible to anyone who could afford such a stay. Even before the denomination of the Polish złoty, the hotel stay cost 150,000 zł per day. The hotel generated the highest revenue during holidays, school breaks, and summer vacations. The "Antracyt" company also signed a contract with Danes for hotel stays. Conference and lecture halls were also rented out for various symposia, courses, and conferences.

In 1996, the "Sokół" Hotel, along with several other tourist facilities in Ustroń, joined the Beskid Tourist Chamber. The aim of this organization was to support economic initiatives, conduct market research in tourism, and analyze legal acts affecting tourism. The Beskid Tourist Chamber also supported vocational training and carried out promotional and informational activities.

In 1997, the "Sokół" Hotel, along with the "Muflon," "Daniel," "Narcyz," and "Rosomak" hotels, merged to form the "Piramida" Hotels Group. Together, they could offer up to 900 accommodation places in 350 rooms, 1,500 seats in restaurants and cafés, and over a thousand seats in 17 conference halls. Their offer was aimed at organizers of larger conferences and training sessions as well as major tour operators. In addition to the tourist attractions of the Silesian Beskids, they also promoted the possibility of spa treatment. The neighboring facilities could accommodate much larger groups of people. The "Piramida" Hotels Group also organized various events such as weddings, proms, alumni reunions, and larger family gatherings.

In 2007, the facility underwent renovation and expansion. It is currently owned by the HOTELE DIAMENT S.A. group headquartered in Gliwice and operates as a four-star SPA hotel: SPA & Wellness Hotel Diament Ustroń.

In 2010, the hotel was expanded with a four-star section. 44 new rooms were added, furnished with modern furniture in line with the hotel industry standards at the time. The rooms feature terraces offering panoramic views of the mountains. Additionally, one of the largest suites in the Podbeskidzie region was designed. This 150 m² suite consists of three bedrooms, two living areas, and two bathrooms. Recreational infrastructure was also built, including an indoor pool and a playroom for children. A rich SPA facility was also established.

In 2016, a general renovation of the three-star section of the hotel was carried out. Air conditioning was installed in all rooms, making Hotel Diament the only air-conditioned pyramid in Ustroń. The rooms were furnished with modern furniture. Bathroom renovations were also completed, aiming to maximize the functional use of space as best as possible.

In 2018, the entire internal infrastructure of the 4-star section of the hotel was refreshed. Air conditioning was installed in all rooms. The rooms were furnished with new furniture and a modern carpeting system. The children's playroom was also modernized, equipped with special recreational devices and educational toys. Additionally, a fitness club was created with a view of the pool and the mountain panorama.