| Business | Phone |
| Farlow's Scientific Glassblwng 200 Litton Dr # 234, Grass Valley 95945 | (530) 477-5513 |
| Quartzfab 901 La Barr Meadows Rd # G, Grass Valley 95949 | (530) 477-5091 |
| Cherry Glass 12301 Loma Rica Dr, Grass Valley 95945 | (530) 271-0386 |
| Chris Depesa 12301 Loma Rica Dr, Grass Valley 95945 | (530) 272-2042 |
| Galaxy Glass 1451 E Main St, Grass Valley 95945 | (530) 477-1335 |