Abstract: There is disclosed an apparatus for visually inspecting gemstones. The apparatus contains a first light source, a sample stage adapted to receive a gemstone thereon, and a rotating stage located below the sample stage. The rotating stage is adapted to rotate relative to the sample stage. Embodiments of the invention therefore provide a portable and automatic gemstone inspecting apparatus that provides multiple inspection methods centrally without the need to use other external devices.

Abstract: There is disclosed an apparatus for visually inspecting gemstones. The apparatus contains a first light source, a sample stage adapted to receive a gemstone thereon, and a rotating stage located below the sample stage. The rotating stage is adapted to rotate relative to the sample stage. Embodiments of the invention therefore provide a portable and automatic gemstone inspecting apparatus that provides multiple inspection methods centrally without the need to use other external devices.

Abstract: Systems and methods which provide a compact spectrometer using static Fourier transform interferometer (SFTI) cube configurations, such as are suitable for use with respect to mobile and portable electronic devices, are described. A SFTI cube of embodiments comprises a monolithic dual mirrored wedge beam splitter structure wherein mirrored wedge surfaces provide two reflective mirrors that are slightly tilted away from the orthogonal directions so that the resultant beams of light cross over one another and form an interference pattern. SFTI cube implementations of embodiments facilitate highly compact spectrometer configurations having a wide wavelength range, high resolution, high throughput, and low cost.

Abstract: Systems and methods which provide a compact spectrometer using static Fourier transform interferometer (SFTI) cube configurations, such as are suitable for use with respect to mobile and portable electronic devices, are described. A SFTI cube of embodiments comprises a monolithic dual mirrored wedge beam splitter structure wherein mirrored wedge surfaces provide two reflective mirrors that are slightly tilted away from the orthogonal directions so that the resultant beams of light cross over one another and form an interference pattern. SFTI cube implementations of embodiments facilitate highly compact spectrometer configurations having a wide wavelength range, high resolution, high throughput, and low cost.