Signed Studio Pottery Bowl Two Tone Blue And Purple Glaze

Signed studio pottery bowl two tone blue and purple glaze. Measure abput 2.5" tall and about 5" wide. The top of the bowl is about 4" wide/ Signed on bottom, cannot make it out, maybe Cialen or Cralen difficult to read. No chips No Cracks There is a small spot in the glaze on the inside of the rim, where there is white visible.