Justice Schmidt said Ms Elahi must have suffered a «terrifying and painful death» at the hands of her husband of «considerably greater physical stature».
«That he broke off the tip of that large knife between her teeth when he stabbed her in the face may not be overlooked,» she said.
Ahmed left Ms Elahi, 29, dying on a blood-soaked mattress and smoked several cigarettes over 10 minutes, according to the agreed facts.
He changed his Facebook status to «THE END» and switched her profile picture to one of them smiling together.
The judge said Ahmed watched his wife of 5½ years until she had stopped breathing and was «beyond help» before using her thumb to unlock her phone and call triple zero.
«These further cruel and deliberate steps ensured Ms Elahi’s death,» Justice Schmidt said.
In sentencing Ahmed, she said others must be deterred from acting on feelings of possession, jealousy or infidelity with a ready-to-hand weapon such as a kitchen knife — «no matter how angry or wronged we may feel».
The judge said the heartbreak described in a victim impact statement from Ms Elahi’s father, when he visualised his child’s last moments, could well be understood.
Ahmed’s jail time was backdated to his arrest, meaning he will be eligible for parole from May 2037.
❏ Support is available by phoning National Sexual Assault, Domestic Family Violence Counselling Service 1800 737 732; Men’s Referral Service 1300 766 491; Lifeline 13 11 14.