May 05, 2023 Recorded Option Available HERE |
|---|
| Instructors/Type of Certificate: Branko Deljanin, Joe Lowry Letter of Attendance |
| JADE and TURQUOISE: • Testing Jade and Imitations with standard instruments • Testing for A, B, C Jadeite Jade with advanced instruments • Turquoise History, Mining and Treatments • Turquoise Properties and Quality |