Transpartent, Colorless, Isotropic
Transpartent, Colorless, Anisotropic, Low Birefringence (0.001 to 0.020)
Emery
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more images of Emery.)
Feldspar
Quartz
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more images of Quartz.)
Transpartent, Colorless, Anisotropic, Moderate Birefringence(0.020 to 0.065)
Zircon
Transpartent, Colorless, Anisotropic, High Birefringence
Transpartent, Pink to Reddish Hue, Isotropic
Transpartent, Redish Hue, Anisotropic
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