Stella murderer Xander Bylsma was given two life sentences in the North West High Court in Mahikeng on Friday.
Bylsma was found guilty on two counts of murder by Judge Ronald Hendricks in February.
The 21-year-old Bylsma's sentence follows an incident in which two girls - Marna Engelbrecht, 17, and Sharnelle Hough, 16 - were killed on Saturday, 26 May 2018.
Engelbrecht's and Hough's lifeless bodies were found at the hostel at Hoërskool Stella in North West.
Hough's body was hanging from a banister while Engelbrecht's body was found in a bathroom. He strangled the girls and tried to make their deaths look like suicide.
Shortly after the girls' bodies were found, Bylsma confessed to private detective Chris Saunders after which he handed himself in at the Vryburg police station and was arrested. He'd been in custody since.
In delivering his sentence on Friday, Hendricks said Bylsma had shown no remorse.
'Lifelong suffering for victims' families'
"This could be a stumbling block in your realisation of what lifelong suffering you have inflicted on the victims' families.
"The dreams of the murdered girls' parents were shattered by someone who sees nothing wrong with what he did. The void of their children's deaths will never be filled - they will never see their children again."
Hendricks said the court should take into account that Bylsma had been found guilty of serious crimes.
"Two young girls lost their lives. That makes these murders more aggravating - the fact that the girls were young.
'Actions disgusting'
"Your actions were disgusting. You showed no respect for them. There is a strong voice from society that gender-based violence should be stopped. The only way to stop this is to impose heavy sentences.
"According to the law, minimum sentences are prescribed. For premeditated murder, it is life imprisonment, unless there are compelling or material circumstances that justify a lesser sentence.
"Your lawyer argued you were young, a first-time offender and emotionally immature and that these were material circumstances," Hendricks said.
Hendricks, however, found that these were not sufficient to deviate from the minimum sentence.
The judge then sentenced Bylsma to two life sentences - one for each murder. The court also declared him unfit to possess a firearm in terms of section 103 of the Firearms Control Act.
North West provincial police commissioner Lieutenant General Sello Kwena welcomed the sentence and applauded the Stella detectives for "working around the clock to gather information which positively linked the accused with the crime and subsequent conviction".
Kwena said that the sentence will send a clear message that gender-based violence will not be tolerated and that those who carry out such deeds will be shown no mercy.