'Got a fair bit for it': Marcus Stanford's prison call reveals what he did with Stephanie Scott's rings

Marcus Stanford told his twin brother Vincent he got a "fair bit" for the two rings that belonged to murdered bride-to-be Stephanie Scott after he pawned them off at a shop in Adelaide, a shocking new video has showed.

The police video shows Mr Stanford remain expressionless as he is played the chilling phone conversation recorded from a NSW prison between himself and his twin, who has admitted killing Ms Scott and posting away her two rings.

Marcus Stanford during an interview with police. Source: 7News

"What did you do with the stuff that I sent you?" Vincent asks from prison.

"The envelope?" Marcus questions. "Exactly what you told me to do."

The conversation between the twin brothers then continues.

"Did you get a fair bit for it?" Vincent asks.

"Yeah, yeah, yeah," Marcus said.

"That’s good," Vincent adds.

Bride-to-be Stephanie Scott with her mother. Source: 7News

When asked what he did with the money, Marcus Stanford says he bought a plane ticket "for the trip and all that".

Despite facing a maximum 25 years behind bars for being an accessory after the fact in Ms Scott's murder, Marcus Stanford is set to walk free on September 9 given time already served.

He was sentenced to 15 months jail, but NSW Premier Mike Baird says the sentence was not appropriate.

Marcus Stanford is led from court. Source: 7News

"When there is a crime such as this we need the appropriate justice and certainly on what has been presented that doesn't seem to be the case to me," Mr Baird said on Wednesday.

The NSW attorney-general has now been directed to explore "every possible avenue" of action to appeal the 15-month sentence.

Stanford's decision to sell Ms Scott's rings, which were mailed to him by his brother Vincent, was labelled "utterly appalling, disgraceful and inexcusable" by Justice Robert Allan Hulme in the NSW Supreme Court sitting at Leeton on Wednesday.

"The attorney-general (Gabrielle Upton) is reviewing every possible avenue in terms of actions she can take," Mr Baird said.

Stanford must have known the two rings his brother sent him in the mail belonged to the bride-to-be, Justice Hulme said.

His brother Vincent Stanford attacked the 26-year-old teacher at Leeton High School, in the state's Riverina on Easter Sunday 2015, less than a week before she was due to marry her childhood sweetheart.

Vincent Stanford dragged her to a store room, sexually assaulted her and stabbed her in the neck.

He then removed Ms Scott's engagement ring given to her by fiance Aaron Leeson-Woolley, and a graduation ring from her mother, and sent them with her driver's licence in an envelope to Marcus's Adelaide address.

Stephanie Scott and fiance Aaron Leeson-Woolley. Source: 7News

Marcus Stanford sold the rings for $705 at an Adelaide jewellery store and burned the driver's licence.

Given the heavy media coverage at the time, Marcus Stanford must have known the rings had been stolen "in the context of the murder of a woman" and were of "great sentimental value", Justice Hulme said.

Vincent Stanford has admitted raping and murdering Ms Scott and will be sentenced in October.

Leeton Shire Mayor Paul Maytom said the community was likely to feel "uncomfortable" with Marcus Stanford's sentence considering his connection to such a horrific crime.