isotropic crystal

crystal, isotropic 

A crystal which has the same optical properties in all directions.
References in periodicals archive ?
In the consideration of micro thermal behavior the XRD is one of the suitable method for studied of isotropic crystal and for un-isotropic based on mineral d-spacing and intensity could study changing atomic structural of kaolinite crystal.
Do not under any circumstances consider purchasing an isotropic crystal with a refractive index of any other than 2.
Should you wish to smuggle these isotropic crystals around the world, this microscope pen will allow you to tell the difference between diamonds and the pieces of pretty glass which trick many a damsel into a rogue's embrace.