Gemmology: If a gem material remains dark when placed between the crossed polarizing filters and rotated, due to the plain polarized light passing through the stone and being absorbed by the analysing filter, what sort of gem material is it?

Question

If a gem material remains dark when placed between the crossed polarizing filters and rotated, due to the plain polarized light passing through the stone and being absorbed by the analysing filter, what sort of gem material is it?

Emma Begent-Cove · Accepted Answer

Isotropic

Gemmology

If a gem material remains dark when placed between the crossed polarizing filters and rotated, due to the plain polarized light passing through the stone and being absorbed by the analysing filter, what sort of gem material is it?

Isotropic

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