GEM GEMSTONE TOOLS / IDENTIFICATION KIT x 9 , Set E

The Set hand-pick best tools and combine to give you the high quality devices and tools plus the spectroscope is upgraded to a big one. The set includes Gemological Refractometer with Built-in Light Source and Index Oil, Handheld Polariscope, Darkfield Loupe, Desktop LED Lighting, New Calcite Dichroscope, Big Prism Spectroscope, Chelsea Filter, 30x 21mm optical glass Loupe and 10x and 20x chrome plated Loupe all in one package. Made with precision and quality to insure accuracy, durability, comfortability for ease of using each slick and stylish devices.

1) GEM REFRACTOMETER with Built-in Light Source and 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

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2) Handheld Polariscope with Flash light (CLMG-7202):

The polariscope is used to test cut or rough gemstones. Allows two polarising filters to observe the structure and optical properties of precious stones or minerals. It visually shows if a stone is doubly or singularly refractive. It can also be used in identifying Moisannite and detecting strain in diamonds.

Specifications:

Darkfield Loupe

• Size: Lenght: 80mm, Diameter : 28mm
• Gemmologist tool for diagnosing optical properties of a gemstone (singly refractive or double refractive).
• Material: Optics glass, Metal

Handheld LED flashlight

• Lenght: 156mm
• Diameter: 24mm
• Power: AA battery x 2 , (Batteries are not included)

Accessories included:

• Handheld LED Flashlight
• Carry Pouch

Operating Information:

1) Put the flashlight into the opening under the polariscope.
2) Tighten the screw to hold the flashlight secure.
3) Insert the removable lense into the polariscope with narrow end down.
4) Place Gemstone in the prong holder into the open space as shown above.
5) Turn on flashlight. Hold the upper portion of the polariscope to your eye.

Warranty: 2 years warranty (24 months)

The Product

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3) Handheld Darkfield Loupe with Flashlight (CLMG-7201):

The darkfield loupe is a small instrument that provides 10x magnification as in a standard loupe, with an important added feature: it is combined with a specially constructed area that enables you to view a gem against a black background with strong lateral lighting. This is called darkfield illumination, the reason why this instrument is called a darkfield loupe.

This type of lighting environment makes it easier to see certain types of inclusions and to determine more precisely what they are. Especially valuable for colored gemstone buyers because seeing inclusions clearly plays an important role in separating one colored stone from another.

The darkfield loupe is an important and essential tool in examining colored gemstones, for anyone buying diamonds or diamond jewelry and in viewing many fracture-filled diamonds that are currently circulated worldwide. A fracture-filled diamond also known as clarity enhanced diamond, is a diamond which contains a crack or cracks that have been filled with a glass-like substance to improve the overall appearance of the stone. Using the darkfield loupe is the easiest way for most people to spot fracture-filled diamonds.

Specifications:

Darkfield Loupe

• Magnification : 10x
• For grading gemstone, Using dark Field lightning for inspection of inclusion, internal cracks, surface marks, etc.
• Viewing field (lense) : 18mm in diameter
• Length : 10mm

Handheld LED flashlight

• Length 156 mm LEDs x 3
• Power : AA x 2 (not included)

Accessories included:

• LED Flashlight
• Carry Pouch
  

Warranty: 2 years warranty (24 months)

The Product

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4) Desktop LED Light (N-7202):

The Desktop LED Light is an enhancement tool for use in Handheld polariscope, Handheld Darkfield Loupe or Gem Refractometer.

Specifications:

• Size: 98mm x 58mm
• Diameter: 24mm
• Power: AAA battery x 3 (Included)
  

Warranty: 2 years warranty (24 months)

The Product

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5) New Calcite Dichroscope (CLMG-7208):

Dichroscope show whether or not a stone is dichroic (reflects 2 colors). This can be helpful in differentiating stones of the same color from one another. Dichroscopes can be useful with identifying gemstones that are still in the rough and when stones are set and difficult to get to with other instruments. Light entering the dichroscope is broken into two polarized rays that have vibrational directions at right angles to each other. The two images in the dichroscope represent the polarized light and the pleochroic colors signifies doubly refractive stones except if the stone is viewed thru the optic axis. Single color in the dichroscope represents singly refractive stones.

The advantage of the dichroscope is that the two pleochroic colors that may be characteristic of a given direction in a doubly-refractive gem are seen side by side. If no dichroism is identified in the first assessment, the stone can be turned and viewed in other directions. Trichroic gems can also be distinguish and will reveal three colors if the stone is viewed in three directions perpendicular to each other.

Specifications:

• Type: calcite
• Diameter: 15mm
• Length: 60mm
• Body: Metal

Accessories included:

• Leather Soft Case
• User Manual
  

Warranty:2 years warranty (24 months)

The Product

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6) Big Prism Spectroscope (CLMG-7204):

This Big 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: 130mm
• Diamter: 20 mm
• Material: Aluminium (Heavy Duty)
• Inside Instruction: Prism Type

Accessory included:

Leather Carry Pouch

Warranty: 2 years warranty (24 months)

The Product

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7) 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

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8) 30x 21mm Heavy Duty Optical Glass Loupe (CLMG-7030):

CLMG-7030 is professionally made with precision and HIGH QUALITY, the finest and highest materials. One of the most important tools, an eye loupe magnifier is must for a real close-up inspection of Gems, Diamonds, Minerals, or any other small intricate items. Indeed a VERY HEAVY DUTY 30x OPTICAL GLASS magnification power Jeweler's Loupes with 21mm diameter with magnification that brings even the very smallest detail into sharp focus with gold plated and black finish. It comes with a Leather storage case for protection and easy carrying.

One of our FINEST loupe, DURABLE & HIGH QUALITY hand held magnifying glass that have optical clarity for easy reading of fine print, stamps, jewelry and coins, for map reading, antiques, photos, or fine inspection and as an aid to collectors, scientists, hobbyists and much more.

Features:

• 30x OPTICAL GLASS magnification power with 21mm diameter
• With gold plated and black finished
• Professionally made with precision and quality
• Fantastic value and very convenient
• Easy to carry in pocket or purse

Specifications:

• 30x magnification power
• 21mm diameter
• gold plated and black finished
• Leather storage case for protection and easy carrying

Accessory included:

Leather storage case for protection and easy carrying

Warranty: 2 years warranty (24 months)

The Product

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9) 2-in-1 Chrome Plated 10x and 20x Jeweler's Loupe (MG-22181):

Made with precision, HEAVY DUTY, HIGH QUALITY and one of the most important tools used to inspect gemstones and other jewelry. With its special OPTICAL GLASS with 10x & 20x powerful magnification lenses, objects appear to be larger and reveal tiny details that couldn't seen with normal vision even the very smallest detail into sharp focus such as tiny crystals, trace minerals, grain surfaces, and microfossils. It comes with a Cushioned Sturdy storage case for protection and ease of carrying anywhere.

Usage & Applications:
It can be used in a number of different industries, notably in jewelry trade, photography, printing, laboratories, etc. Used for many soldering applications to inspect a printed circuit board with small surface components on it, to carefully analyze how ink lays on paper while register film separations to one another, to check registration of colors, estimate dot-gain, and diagnose issues with roller pressure and chemistry based on the shape of individual dots and rosettes, and to review, edit or analyze negatives and slides on a light table, for viewing the ground glass image to aid focussing, for a real close-up inspection of Gems, Diamonds and Minerals, circuit board films, reading fine prints, stamps, jewelry and coins, photos, aid to collectors, scientists, hobbyists, and antiques or any other small intricate items.

Have our MG-22181, a lightweight, powerful magnifier that has impeccable optics where distortion & color problems are corrected and is easy to use. Get the best for demanding jobs!

Features:

• Uses OPTICAL GLASS
• With 10x & 20x magnification
• With 2 diameter options, 18mm & 12mm
• Useful tool for a variety of gemstones
• Reliable and transportable
• Durable & built to last long, indeed a value for your money device
• Complete with FREE sturdy carrying case with cushioned compartments that fits the device perfectly, an added protection for the device

Specifications:

• 2 Loupes in 1 Folding
• 10x magnification 18mm Diameter
• 20x magnification 12mm Diameter
• Length when completely Closed: 2 inches

Accessory included:

Sturdy carrying case with cushioned compartments

Warranty:2 years warranty (24 months)

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