raw jade
When I look at a piece of jade, it's easy to tell its color, texture, and transparency. But figuring out its mineral makeup is another story!
preparing jade for analysis
I first cut off a small piece of jade and glue it to a glass slide. Then I cut off most of the jade and polish it until it's very thin.
scanning electron microscope
Today we have tools to get a closer look at jade and all its chemical elements. This helps me understand how jade formed. I may even be able to figure out where it was formed.
getting a closer look
The black and white image is what jade looks like viewed by a scanning electron microscope. The color photo is an optical microscope image of a similar piece of jade. See those tiny mineral grains? They can tell me which area in Guatemala the jade formed. How amazing is that?
Image Credits:
SEM: courtesy of AMNH; all other photos: courtesy of George Harlow