This course focuses on three coloured gemstones (rubies, sapphires and emeralds) that individually and collectively are considered the cornerstones of the coloured gemstone trade.
This course provides a complete overview of their physical and optical properties, principal sources, mining, how they can be identified from gemstones that can be deceptively similar in appearance and their lab-created counterparts, common treatments and enhancements, pricing guidelines, what constitutes the best quality and how to properly care for them.
This course includes one online test at the end of lesson twelve.
This is a 'General Interest' course. After completion, students may upgrade to 'Coloured Gemstones' and receive a credit equal to the value of the cost of this course towards Coloured Gemstones.
This course is available for long distance learning. You can register at any time and study at your own pace. There are no time restrictions.
If you reside outside of Holland, please contact DGA at email@example.com for more information.