Some cigars have a shiny appearance due to the presence of oils on the wrapper leaf. These oils can come from the tobacco plant itself or can be added during the fermentation process. The shine or "sheen" on a cigar can be an indication of the quality of the wrapper, as well as how well it has been fermented and aged.
However, the shine on a cigar does not necessarily indicate the quality or taste of the cigar itself. It is possible to have a shiny cigar that is poorly made or has a bad flavor, just as it is possible to have a matte cigar that is high-quality and flavorful.
Ultimately, the shine on a cigar is a matter of personal preference and does not necessarily have a significant impact on the smoking experience. Some cigar smokers may prefer a shiny appearance, while others may prefer a more matte finish. The most important factor in choosing a cigar is the quality of the tobacco, the construction of the cigar, and how it tastes and smokes.