Device For Measuring Properties Of Scatterers , For Color Measuring For Scattered Light Of Gemstones, For Measuring Brightness Of Gemstones, And For Measuring Luminescence Distribution

A device for measuring properties of scatterers which measures properties of a scatterer from a stereoscopic scattering distribution of said scatterer upon receiving an electromagnetic wave with a certain wavelength distribution, comprising:

• a paraboloidal mirror or a paraboloidal screen;
• a specimen platform for placing said scatterer on a focal point of said paraboloidal mirror or said paraboloidal screen;
• a generator for generating said electromagnetic wave;
• and
• an imaging means for imaging, as planar images, scattering waves which is generated by said scatterer upon receiving said electromagnetic wave from said generator, and which is then reflected off said paraboloidal mirror or projected onto said paraboloidal screen, wherein said scatterer to be measured is placed on said specimen platform, and wherein said electromagnetic wave is irradiated onto said scatterer from at least either any one or more directions, or one or more continuous directions of a hypothetical spherical surface having said focal point as its center, and wherein scattering waves scattered by said scatterer and reflected off said paraboloidal mirror or projected onto said paraboloidal screen are imaged by said imaging means as planar imaging data, and wherein from thus obtained imaging data, a stereoscopic distribution of said scattering waves generated by said scatterer is obtained so as to measure properties of said scatterer from the distribution result, and wherein the scattering waves are obtained in the scope less than 3π/4 (rad.) of a curve on the cross section with center axis of a hypothetical spherical surface with the focal point on its center.