first add primitive - cylinder with 8 rotation segments, 1 cap segment and 4 height segments, with measures radius=50 and height=60.
Make it editable(ctrl+C), and use optimize function
step 2 of 16
with the loop selection tool select the two loopsas depicted, and...
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...the two polygon loops, as depicted here. Next...
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...click back to line editing and choose func. edge cut(m~f), check, if Create N-Gons is unchecked and click apply. When there are not created triangles on the loops above and below the cutted lines, then click poly editing(under the line editing) button, here we have selected both loops, now we just choose triangulate(after right click), and we're done with this step.
step 5 of 16
I. - select rectangular selection tool
II. - check, if select only visible is unchecked
III. - select these points
IV. - in coordinates bar simply add *1,08 behind X and Z sizes(we need to set the points to the circular shape)
step 6 of 16
I. - select all top points
II. - rotate these points to -22,5Â°
III. - simply add behind X and Z sizes *0,56
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with rectangular selection tool select recent points, as descripted, and set them similar to this pic
step 8 of 16
before you select polys, check if select only visible is checked, then select polys from the top wiew window, and use melt(U~Z).
Next select "red"polys, use melt, next the "blue" polys and finally use melt. Here we have the whole diamond(brilliant).
step 9 of 16
Settings for the diamond shader - especially the IOR-refraction, 2,417 for diamond.