At about 9:30 p.m., two men wearing hooded sweatshirts who were covering their faces with white T-shirts entered the Secrets Adult Boutique located at 525 Contra Costa Blvd.
According to witness reports, the men threatened employees at gunpoint, ordering them to lie face down on the ground while one of the men leapt over the counter and palmed money from the cash register.
The suspects -- described as two black men in their mid 20s -- then fled the business in an unknown direction.
According to police, one suspect is about 6 feet tall and weighs 150 pounds. He was wearing gloves, a black hooded sweatshirt and brown Dickies work pants.
The other man is about 5 feet 8 inches tall and has a medium build. He also wore gloves with a green hooded sweatshirt, tan pants that revealed gray underwear, and green Nike sneakers, police said.
No one was injured during the robbery.
Anyone with information is asked to contact police investigators at (925) 288-4600.