Their work has been purchased both around the country and overseas.
"We have sold pieces all over the country and overseas. It's quite cool to think that our creations are all over the place."
Phil says he and Greg collect the stones themselves.
"We've collected stones from the East Coast, Bay of Plenty and Manawatū. A lot of the stones are exotic and can be quite hard to find. We spend a lot of time in the bush to find it. We have jasper, opal and a whole lot of things."
Their interest stemmed from their passion for geology, says Phil.
"We collect fossils. We decided to branch out more and we started collecting the stones. We thought we could repurpose them so we've made some of them into sculptures and have kept some as they are."
He says depending on the sculpture they create, the process can take from two hours to four days.
"Some stones take two days to polish and then another two to create the sculpture."
Each stone tells a story, Phil says.
"Most of the rocks are altered by hydrothermal or metamorphic processes. They all tell a story of the country we live in which is interesting in itself. It's very educational."
He says by entering the Taranaki Arts Trail, more people have the opportunity to see New Zealand's precious stones.
"It's pretty amazing. No two rocks are the same. We're excited to share this with the region and visitors coming to Taranaki for the arts trail."
The Details:
What: The Taranaki Arts Trail: Phil Pollock and Greg Johnston's stone sculptures
Where: 186 Lincoln Rd, Inglewood.
When: Phil and Greg's workshop will be open from October 28-November 6.
