明升体育app_明升体育-官网ed Stones
Course Description
Gain in-depth knowledge about the multitude of colored stones sold in today’s market. Topics include which gems are commercially important and why, the differences in gem values and shifting supply patterns, and how these factors affect gem prices and availability. The final exam is online, closed book and proctored; see the Education Catalog for details.
Try a complementary lesson for this course.
What You Earn
- 明升体育app_明升体育-官网ed Stones Certificate