Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.

A variety of techniques for creating reliable signatures of jewelry and gemstones is provided. These signatures can be used as references for later authentication of the jewelry and/or gemstones. With some examples, blockchain may be used to reliably store the reference signatures for later use during authentication, and a digital asset such as a non-fungible token can link these reference signatures with the physical jewelry/gemstones. Reference signatures can uniquely identify the jewelry/gemstones based on their optical, acoustical, electromagnetic, or other physical characteristics. Artificial intelligence and machine learning techniques (such as convolutional neural networks) can be used to determine which feature characteristics of jewelry/gemstones are to serve as the reference signatures.

A variety of techniques for creating reliable signatures of jewelry and gemstones is provided. These signatures can be used as references for later authentication of the jewelry and/or gemstones. With some examples, blockchain may be used to reliably store the reference signatures for later use during authentication, and a digital asset such as a non-fungible token can link these reference signatures with the physical jewelry/gemstones. Reference signatures can uniquely identify the jewelry/gemstones based on their optical, acoustical, electromagnetic, or other physical characteristics. Artificial intelligence and machine learning techniques (such as convolutional neural networks) can be used to determine which feature characteristics of jewelry/gemstones are to serve as the reference signatures.

A variety of techniques for authentication of jewelry and gemstones is provided. With some examples, blockchain may be used to store a reference signature for the jewelry/gemstone, and a digital asset such as a non-fungible token can link this reference signature with the physical jewelry/gemstone. During an authentication process, the reference signature stored on the blockchain can be accessed and compared with a test signature derived from an item that is purported to be the original jewelry/gemstone to determine whether they match to support a declaration that the purported jewelry/gemstone is authentic.

A variety of techniques for authentication of jewelry and gemstones is provided. With some examples, blockchain may be used to store a reference signature for the jewelry/gemstone, and a digital asset such as a non-fungible token can link this reference signature with the physical jewelry/gemstone. During an authentication process, the reference signature stored on the blockchain can be accessed and compared with a test signature derived from an item that is purported to be the original jewelry/gemstone to determine whether they match to support a declaration that the purported jewelry/gemstone is authentic.

Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

Systems and methods here may be configured for cooling and examining materials. In some example embodiments, the system may include a main thermoconductive body with indentations on the top surface, a bottom surface having legs structures along the edge, wherein the bottom surface and the plurality of leg structures form a partially enclosed bottom chamber, and a center channel connecting the top surface and the bottom chamber.

A system (100) for viewing and ascertaining optical characteristics of gemstones, said system including a first and second integrating sphere (150,150a), wherein each integrating sphere (150,150a) is in optical communication with each other and having a spacer portion (116) disposed therebetween, a first light source (118) engaged with the first sphere (150) and for providing light to the interior of the first sphere (150) and a second light source (118a) engaged with the second sphere (150a) and for providing light to the interior of the second sphere (150a); at least one optical image acquisition device (110) in communication with the interior of one of the spheres for acquisition of an optical image of a gemstone disposed in a region between the spheres; a transparent platform (117) for supporting the gemstone between the two integrating spheres (150,150a); and a control module (120) in communication with the optical image acquisition device (110), for controlling the acquisition of optical images of gemstones thereof; wherein said optical image of the gemstone is processed by a processor to ascertain one or more optical characteristics of the gemstone.

Gemstone grading method including illuminating the gemstone by light having a plurality of spectral components, each modulated according to a spectrally specific modulation (e.g., of intensity, frequency, phase), collecting the light following interaction with the gemstone, extracting from the collected light a set of intensity values for a respective set of modulation parameter values to provide a transmittance spectrum, and an output indicative of the transmittance spectrum (e.g., color, clarity, fluorescence grade). A complementary system includes a plurality of monochromatic light sources and respective modulators for simultaneously illuminating a gemstone with a modulation spectrally specific for each light source, a detection system for collecting the light following interaction whose signals are fed via a communication system to a data processor configured to extract a set of intensity values for a respective set of modulation parameter values to provide a transmittance spectrum and an output indicative thereof.

Gemstone grading method including illuminating the gemstone by light having a plurality of spectral components, each modulated according to a spectrally specific modulation (e.g., of intensity, frequency, phase), collecting the light following interaction with the gemstone, extracting from the collected light a set of intensity values for a respective set of modulation parameter values to provide a transmittance spectrum, and an output indicative of the transmittance spectrum (e.g., color, clarity, fluorescence grade). A complementary system includes a plurality of monochromatic light sources and respective modulators for simultaneously illuminating a gemstone with a modulation spectrally specific for each light source, a detection system for collecting the light following interaction whose signals are fed via a communication system to a data processor configured to extract a set of intensity values for a respective set of modulation parameter values to provide a transmittance spectrum and an output indicative thereof.