It comes a week after another quake hit the island killing at least 16 people.
The US Geological Survey said the quake, off the north coast of the island, struck 10km (6.21 miles) underground.
The quake caused light damage as far away as the Javanese city of Bandung, some 955 km from Mataram, but was felt strongly on the neighbouring resort island of Bali.
An Indonesian official said at least three people were killed by the natural disaster, which struck in the early evening after sunset.
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There were no immediate reports of casualties, but authorities said the quake might have caused some damage.
A policeman examines debris that fell and crushed parked motorbikes following a strong quake on nearby Lombok island, at a shopping center in Kuta, Bali, Indonesia August 5, 2018.
The Meteorology, Climatology and Geophysics Agency for Indonesia had reported scores of aftershocks in the hours last week's quake and had warned that another major quake could be imminent.
Iwan Asmara, an official from the disaster mitigation agency, said residents were fleeing from their homes in a panic to move to higher ground.
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Harry "only owned the Audi RS6 for a year", according to Auto Trader , which is selling the vehicle . Overton Prestige is now selling Prince Harry's Audi RS6 Avant for £71,900.
Teigen has been vacationing in neighboring Bali with her husband, musician John Legend, and their two young children, Luna and Miles. "Bali. Trembling. So long".
"Oh man. We are on stilts".
Chrissy, who is pretty active on social media, got social media in a tizz when she began to live tweet her experience, writing there were 'so many aftershocks'. It felt like a ride.
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