The clock has a circular face made from white sheet-metal, encased in hand-finished cork that follows the shape as a thin strip around most of the edge.
The addition of a right-angled corner on the bottom left enables the clock to stand on any flat surface.
"Time rolls on, but once in a while you need to stand still," Ernst told Dezeen. "Clork does not present a full circle, it has an edge that stabilises you for the moment."
The minute and hour hands are black with rounded tops and bottoms. There are no numbers or increments on the face, but circular depressions mark the positions of numbers 12, three, six and nine.
The young designer worked with cork for the first time on this project. "The fact the clock is well received is a relief for me, it means that I've done my job well," Ernst said.
"Using both cork and metal creates an attractive contrast," he added. "Clork should make people feel content about themselves every time they check the time."
Clork is available in natural or black cork and has a diameter of 19 centimetres.
Puik Art works in collaboration with new Dutch designers to help get their products to market. Previous projects include Keyker by Mas Peters, a mirror with a magnetic board to hang keys on underneath; Thomas van Rongen's Candela, a five-footed self-supporting candle; and the stainless steel and bamboo Shunan table by Nieuwe Heren.
Cork also features prominently in Ilse Crawford's range for Ikea, which was launched in Stockholm earlier this month.