Authorities said a Bourne’s man’s distinctive “666” forehead tattoo helped lead to his and his girlfriend’s arrest on Thursday after stealing $570 worth of sunglasses at the Natick Mall.

Natick Police arrested Eliezer Santiago, 39, and Grace H. Stewart, 32, after the 4:30 p.m. theft at the Oakley Store in the Natick Mall, prosecutor Tim Cochrane said Friday during the pair’s Natick District Court arraignment.

An employee saw Stewart and Santiago in the store looking at sunglasses. They turned down any assistance, and left the store a few minutes later. Employees noticed three pairs of sunglasses, valued at $570, were gone.

“They were able to describe the male individual who had a tattoo ‘666’ on his forehead,” Cochrane said.

Stewart and Santiago left the mall, but were quickly pulled over by officers. The officers identified them as the suspects due to Santiago’s tattoo. Cochrane said officers found the three pairs of sunglasses in the car.

Police charged Santiago and Stewart, both of 180 Harmony Hill Road, Bourne, with larceny of property worth more than $250 and conspiracy to commit a crime.

Cochrane asked Judge Jennifer Stark to hold Santiago on $2,000 bail. Santiago, the prosecutor said, has a record that includes 47 guilty convictions, including a recent shoplifting (third offense), for which he served nine months in jail. Cochrane also asked that Stewart be held on $500, citing a five-page record of mostly larceny and shoplifting convictions.

Santiago’s lawyer, Michael Coyle, argued that the case against Santiago was weak. He said the sunglasses just happened to be in Santiago’s girlfriend’s car.

“There is no security video or eyewitnesses that say they saw my client take the eyeglasses,” Coyle said.

Stewart’s lawyer, Christine Breslin, said her client has a history of showing up to court. She asked that Stewart, who is pregnant, be released without bail so she could continue her prenatal care.

Stark ordered Santiago held on $2,000 bail and Stewart on $500, and ordered both of them to stay away from the Natick Mall. Both are due back in court on Nov. 2 for a pretrial conference.

Norman Miller can be reached at 508-626-3823 or nmiller@wickedlocal.com. For up-to-date crime news, follow Norman Miller on Twitter @Norman_MillerMW or on Facebook at facebook.com/NormanMillerCrime.