His jewelry can be defined by three elements: simplicity of design, repetition of similar or identical forms and surface texture or treatment.

Once you've tuned in to how things feel, an awareness of surface texture should apply to everything you put in your garden.

Bonus points for clashing surface texture.

The surface texture of phoehoe flows varies widely, displaying all kinds of bizarre shapes often referred to as lava sculpture.

As a consequence, he started to design instruments capable to help him evaluate surface texture, then roundness.