Boyd Sugiki and Lisa Zerkowitz began blowing glass together at Rhode Island School of Design in 1995, where Sugiki earned his MFA in Glass and Zerkowitz an MA in Art Education. Sugiki was first introduced to glass at Punahou High School in Honolulu, HI and went on to earn a BFA from California College of the Arts. Zerkowitz earned a BA in Studio Art from University of California, Santa Barbara. Together they design and produce a line of studio glass in Seattle under the name Two Tone Studios. They have lectured, demonstrated, and taught workshops throughout the United States and abroad. In 2020, they relocated to Toyama, Japan, where Sugiki completed a 4-year contract of Associate Professor of Hot Glass at Toyama Institute of Glass Art in 2024. Simultaneously Zerkowitz served as Secretary of the Glass Art Society Board of Directors, organizing and implementing their inaugural travel program trip to Japan.