Polarization, Pleochroism, Chelsea, Microscope and Loupe Assignment
ala Afia!!
What is light?

Draw the electromagnetitc spectrum

What is PPL

How deos the polariscope work
Name several Disadvantages and Advantages to the Polariscope

How does light behave in a SR ADR stone?

What do we do the black paper test for garnet and spinel?

Define Pleochroism and give 5 gem examples

Explain color change in Alexandrite

Describe the important features of the microscope (include magnification, field of view, working distance, illumination)

Explain light and dark field illumination

What are the components of the chelsea filter
What type of illumination do you use for chelsea
What is Chelsea used for?

What would you expect to see w/ Chelsea for:
        Blue Cobalt Glass
        Sri Lanka Blue Sapphire
        Emerald

Name the parts of the loupe
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