New Zealand police have recovered a diamond-encrusted green Faberge egg after keeping a six-day watch over the thief accused of swallowing it.

The 32-year-old allegedly gulped down the egg late last week from a store in the country's largest city, Auckland, but was arrested before he could flee.

"Police can confirm the pendant was recovered," they said in a statement Friday.

"It is now in police custody."

Police had assigned an officer to watch over the man while waiting for nature to deliver the trinket -- valued at around US$20,000.

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