- 1982 - Jay Phinney began work as a bench jeweler doing trade work for the industry
- 1992 - Jay and Kim Phinney opened The Karat Patch, Inc.
- 2008 - Jay and Kim's son, Zac, came to work at TKPinc after a stint in college
- 2021 - Zac Phinney receives Graduate Diamonds Certificate from Gemological Institute of America
- 2022 - Zac Phinney receives Graduate Pearls Certificate from Gemological Institute of America
