Diamond vs moissanite · lesson 3

Refractive index: why DG-Anteros exists

Lesson quiz · five questions, in a new order every time

Five questions on lesson 3 of Diamond vs moissanite. The questions and the answers to pick from come in a new order every time you start.

Pick an answer, and the question marks itself. For a question that you answer in your own words, think of your answer first. Then show our answer and say whether you had it. Nothing is saved or sent.

  1. Question 1: What does a refractive index of 2.417 mean?

    Show the answer

    b: The index is the ratio of light's speed in a vacuum to its speed in the stone.

  2. Question 2: Why does the T73 lose its hearts and arrows in moissanite?

    Show the answer

    b: The T73's angles were solved for 2.417, not 2.65.

  3. Question 3: A seller shows 100% symmetry from an H&A viewer for a moissanite cut to diamond proportions. The seller promises "perfect hearts and arrows". What's wrong?

    Show the answer

    b: Symmetry makes a pattern even. The proportions decide whether the pattern forms.

  4. Question 4: You cut DG-Anteros in diamond. What do you see in the viewer?

    Show our answer

    Dark arrows and flooded hearts. The cut is matched to moissanite, not to diamond.

  5. Question 5: In the H&A Scope, which two controls brought the hearts back to the T73 in moissanite, and roughly where did you set them?

    Show our answer

    Pavilion angle and crown angle, around 40.1° and 33°. Those are DG-Anteros's own angles.

More