GEM GEMSTONE TOOLS / IDENTIFICATION KIT x 4 , Set L

Set L combines the high quality and accurate tools to help you in identifying it authenticity, its quality, the elements it contains, etc. This set will surely gives you the ease of identifying stones. The set includes REFRACTOMETER with Built-in Light Source, DESKTOP POLARISCOPE with Built-in LED, Chelsea Filter and Small Diffraction Spectroscope. 1) Desktop Polariscope with Built-in LED (GS-PS1): The polariscope is an instrument specially design for analyzing and viewing gemstones. This is also use to check if the gemstone is doubly or singly refractive. Supplied 2 glass rotatable filters, this portable polariscope is very useful in identifying moissanite, detecting strain diamonds and other gems and separating synthetic amethyst from genuine. The sturdy metal housing is composed of two quality polarizing filters and clear glass lenses which can be rotated freely. The Polariscope GI-PS1 has an ac-powered built-in light source that provides long lasting ideal illumination. A complete instructions is provided for fast and easy installation and it comes with an adaptor for UK or US or Europe or Australia system and a detachable power cable that can be easily replaced when you have to. Specifications: Upper Polariscope Glass Filter Rotatable Glass Sample Plate Interference Ball Detachable Power Cable Dimensions : 195mm x 155mm x 90mm Weight: 750g Temperature: 10-35°C Power Input: 110V-220V 50Hz Accessories included: User Manual Detachable Power Cable Adaptor for Australia, UK or US or Europe system Operating Information: Switching on the lamp and rotate the upper polarizing filter until the right position is obtained to get the maximum illumination wherein the field should not be completely dark Place the stone over the rotatable sample plate. It can be held by hand or by pincers and Observe the brightness of the stone as it changes while completing the 360° rotation. Warranty: 2 years warranty The Product                              2) Gemological Refractometer with Built-in Light Source + RI Fluid (Index Oil) ** (GR-701): The GR-701, commonly known as Gemstone Refractometer, is the primary and most powerful tool in identifying and authenticating polished precious and semiprecious gemstones and also observing the optical properties and the structure of gemstones. This model is just as good as the expensive models used in gemological institutes, it has a built-in light source and with the aid of the Contact liquid (RI Fluid), which creates an optical contact between the glass and the gemstone, you can measure or test the Refractive Index of faceted stones, its transparency or opacity, and its beauty, durability and scarcity. The refractive index (RI) of a gemstone provides the single most important piece of information to a gemologist seeking to identify an unknown stone. Due to its chemical composition and crystallization structure, each gem has a typical refractive index. In fact, you can also use this tool to measure R.I. for many minerals in crystal form as long as the crystals have a flat and polished face. Through these parameters, you can determine whether the gem is a Single Refraction (Isotropic) or Double Refraction (Anisotropic or Birefringence). GR-701 offers you the worry-free, light and easy way to identify and/or authenticate your most precious gemstones. Features: Convenient & easy to carry With built-in light source that makes it a carry-and-use-it-anywhere device Comes with Automatic Temperature Compensation (ATC) that let itself adjust to the climate A bottle of Refractive Index Fluid is provided Approved by strict quality and safety standards Undoubtedly durable and very reliable Specifications: Measuring Range: 1.30 – 1.81 RI Minimum Graduation (RI): 0.01 RI Illumination: Internal illumination with momentary switch Size: 35mm x 63mm x 115mm Scale Division: 0.01 nD Weight: 0.4 kg Ranges of Application: Laboratory, Gemology Filter: Polarizing filter Power Source: 1.5V x3 button batteries Operating Information: Open the upper cover then wash the gem and prism with alcohol. Lay the instrument on the worktable. Drop a little bit of special refractive oil onto the surface of prism and press it by a thin glass bar. (Be sure not too much or too little) Make sure the ground surface of gem to be measured is close to the prism, press it again lightly, let the refractive oil be evenly distributed between the two surfaces then close the upper cover. Press the light momentary switch, make sure that the internal light source is turned on when testing. Move the eyepiece up and down and adjust the diopter accordingly. By this time you can see a light/dark boundary in the viewing field. The gradation (shade) on which the boundary located is called the refractive index of gem. MEASURING METHODS: Remove the polarizer. Turn it onto eyepiece. Then turn the polarizer lightly. You can only read the refractive index value in one direction at a time because the polarizer only allows the light vibrated in one direction to pass through. Turn the polarizer through 90°, you can measure the refractive index value of the light vibrated at right angles to that mentioned above. Turn the gem in the same direction through small degree then turn the polarizer lightly according to above method, you can read the two refractive index values of the light vibrated at right angles to each other. Operate continuously until the gem is at 180° position to its initial position. From a number of groups of measured refractive index values you can find the maximum and minimum refractive index. The difference between the two values is the birefringence of gem. Maintenance: After measurement, remove any dirt from the refractometer's housing (casing) then clean the prism and the gem with alcohol to remove the refractive oil on it. Put back the refractometer into the box for protection. Remove the Battery from the Battery compartment if you are planning on not using the Refractometer for a long period of time to prevent leaks or molds that can damage your device. Accessories included: Small Vial of 1.800 Refractive Index Oil Polarizing Filter 1.5V x3 button batteries Pouch Case Refractometer Index Reference List (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.) User's Manual Packaging:  Pouch Case Warranty:  2 years warranty (24 months The Product                         Included: Refractometer Index Reference List i.e. Jadeite Refractometer Index : 1.660 - 1.680 Reflective Index on PRM / PDT : 32 - 36       3) Chelsea Filter (CLMG-7300): An essential device in identifying colored stones. While it was originally intended to rapidly differentiate between genuine Emeralds and the pastes and doublets which resemble them, it also is a valuable aid in identifying other colored stones, as well. Designed to transmit only deep red and yellow-green light, and the best results are obtained when stones are examined under a strong electric light. Just hold the filter close to the eye with the stone or stones (for a number of stones can be examined at one time) receiving as much light as possible. Under these conditions, Emeralds (absorbing in the yellow green) usually appear distinctly red or pinkish in colour, the actual tint varying from merely pinkish in the case of pale stones, to a rich almost ruby red for better coloured specimens. On the other hand, most imitations of the genuine stone (pastes, doublets, soude Emeralds) retain a green appearance. A helpful tool in identifying certain red, blue and green stones. In rare cases certain emeralds, most notably from South Africa, may not show any pinkish color at all. A synthetic emerald will react the same as a genuine one. Rubies (both genuine and synthetic) appear brilliant red under the filter. Synthetic blue spinel appear yellow-orange or pink while aquamarine and sapphires appear green or green-grey. This Chelsea color filter has a glass filter which gives better clarity, reduces distortion and provide better protection from humidity. With Chelsea filters you can differentiate the genuine emeralds from the fake once, as well as checking the authenticity of aquamarine and sapphires with comfort and ease. Specifications: Filter Diameter: 20mm Body: Made of metal Accessory included: Leather Carry Pouch Warranty: 2 years warranty (24 months) The Product                 4) Small Diffraction Spectroscope (CLMG-7206): A handheld spectroscope for visible light shows the absorption lines of the elements involved in producing its color. For instance, it helps to separate ruby (chrome) against red or pink sapphire (iron). Spectroscope breaks up the light that is being transmitted from a gemstone to its spectral colors. The process allows the gemologist to see the various wavelengths absorbed by the gemstone. Thereby allowing the gemologist to know what elements are contained in the gemstone that are causing the absorption. Making this as one of the most important tools in identifying gemstones. Spectroscopes allows you to analyze a loose or mounted stone's spectrum. They help distinguish naturally colored diamonds from those that have been irradiated and help to distinguish natural stones from synthetics by the stone's selective absorption of certain wavelengths. Specifications: Length : 50mm Diameter : 14mm Material : Brass (Durable) Accessory included: Leather Carry Pouch Warranty: 2 years warranty (24 months) The Product