Distinguishing Between Dust, Scratches, Reflections, and Inclusions
A spark seems to be inside a gem and disappears…
Category GemExpert Course
Examining an Unknown Stone in the Field: A Practical Routine
When you encounter a stone you don’t recognize, your natural…
How to Position and Focus a 10x Loupe When Examining a Gemstone
Select a clean specimen stone, place it in the tips…
Why Gemstone Color Is Not Enough for Reliable Identification
The colour of a gemstone is not a sufficient basis…