Test type A. Several grains from the same muneral are presented with XPL orthoscopic illumination. When pressing on each grain its interference figure is shown.

Test 1

Test 2

Test 3

Test type B. Similar to the last type but in this case only a mineral grain is shown.

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test type C. The interference figures are directly shown.

Test 1	Test 2	Test 3	Test 4
Test 5	Test 6	Test 7	Test 8
Test 9	Test 10	Test 11	Test 12

Test tipo D. Some videos show the behaviour of the interference figures while turning the stage of the microscope and introducing the compensators

Test 1	Test 2	Test 3	Test 4	Test 5
Test 6	Test 7	Test 8	Test 9	Test 10

Plug-in for QuickTime it is necesary.