Mr Lewis said the store would give visitors the opportunity to see the five carvers who work there in action.
"It's really an open-door policy, people will be able to talk to the artists and see first-hand what they do."
The Ngai Tahu descendant admits he has reservations about opening the pounamu store.
"I'm nervous and excited at the same time. What scares me a bit about it is knowing that nothing is guaranteed with running your own business.
"There's still bills to pay, five mouths to feed and just the facts of life to deal with."
He said Maori art is often hard to make a living off, but he said the positives of opening the store and doing something he was passionate about would outweigh his doubts.
Carving jade consists of more than just putting a tool to the stone, he said.
"It's also about the area the stone comes from and building relationships with the people or guardians of the stone. That's a big part of it too."
Mr Lewis said the time it takes to complete a pounamu carving varies.
"It could take a few hours or it could take as long as you like, 10 or 15 hours easy.
"It's very easy to get immersed in the material," he said.
Some of Mr Lewis' other carving work will be displayed at Rotorua Museum's Whakairo exhibition this weekend.
He said the exhibition was not only about promoting the artists behind the work but about creating awareness about Maori art.
"I think it's really important for people to have access to Maori art, in all its forms."
He said he was grateful to live in Rotorua, which he described as the country's Maori cultural capital.
"Maori visual and performing arts has really put Rotorua on the map."
He said he hoped his new jade store can help do that too.