The 20-year-old girl, identified only by her initials as NKD, disappeared after her mother left her in a taxi giving the impression that she has been kidnapped.
However, it turned out that the two eyed around Rs 5 crore (3 million dirhams) worth of gold for a new life abroad.
According to reports, her mother was preparing documents to take the gold back to India at the Sharjah Customs Department when the incident happened.
The girl switched off her phone and took the gold to her boyfriend identified as MAM, a Pakistani, who had conspired with her to quietly slip out of the country.
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The plan was that he would follow his girlfriend after finding a way to transport the jewellery, police said.
Police said it quickly formed an investigative team which arrested the girl within hours as she tried to escape through one of the country's airports.
According to police, the duo have confessed to their crime and have been referred to Sharjah Public Prosecution.