Unlike the lethal white syndrome (LWS) associated with overo patterning in Paint Horses, the pearl dilution has no known negative health effects . Double pearl horses are fully viable, fertile, and have normal vision and hearing. Their light skin, however, requires protection from intense sun exposure to prevent sunburn, similar to other light-skinned horses (cremellos, pintos with pink skin).
The Pearl Horse: Genetics, Phenotype, and Rarity of an Exotic Coat Color
The pearl horse, also known as the “barlink factor” or “concho pearl,” represents one of the rarest and most recently understood dilution genes in equine coat color genetics. Unlike the more common cream dilution (responsible for palominos and buckskins) or the silver dapple, the pearl mutation produces a unique, uniform apricot to pale gold coloration with distinctive skin and eye characteristics. This paper explores the genetic mechanism, phenotypic expression, breed associations, and distinguishing features of the pearl horse.
