500 Riyals

Qatar's shift to a hybrid substrate for this denomination was part of a broader regional move away from pure cotton-based paper — hybrid notes resist moisture and folding damage more effectively, a practical consideration in Gulf climates where notes cycle through air-conditioned interiors and extreme outdoor heat repeatedly within a single day's circulation.

Thomas De La Rue has printed Qatari currency since the Qatar & Dubai Currency Board issues of the 1960s, making this a long-standing commercial relationship that predates the Central Bank's establishment in 2006.