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Gomology Class - 1 Definition: Isotropic gemstones are those that allow light to travel at the same speed and in the same direction in all orientations within the crystal. This means they do not show double refraction because light behaves uniformly throughout the gem. Crystallography: These gems belong to the Cubic (Isometric) Crystal System, which has equal axes at right angles (90°). This perfect symmetry makes their optical behavior the same in all directions. Optical Character: • Optically
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