Gem Equipment

Outstanding Optics Design:

• Apochromatic corrected zoom optics of Zeiss
• Sharp, distortion-free 3D image over the whole visual field
• Mechanical corrected zoom curve for most extensive zoom range 8:1
• A sharp 3D image in each zoom position
• Distortion-free 10x eyepieces with a wide field of view 36 mm at 6.5x
• Individual diopter correction at each eyepiece
• Eyepiece adjustment 55-75mm
• Working distance 92mm (3,6")

Specifications of the Base:

• It comes with a vacuum pump and tweezer system to hold small stones handsfree 
• 360-degree view of stone can be achieved using a rotation handle in the tweezer
• Built-in transmitted adjustable light & upper light source
• Lockable black contrast plate and locked-in pair stage clips
• Power supply by adapter or rechargeable batteries with ~10 hours of battery life
• Halogen lamp with reflector coupled with reflection system with 32 LEDs to ensure sharp and focused light on the diamond.
• Voltage: 100V to 240V

By measuring the quantity of light reflected through the stone, the Presidium Refractive Index Meter II (PRIM II) is able to separate diamonds, moissanite and other colored gemstones via the Refractive Index (R.I) of these polished gemstones.

Unlike a traditional refractometer that has a limited range of R.I measurements and thus cannot be easily used to measure R.I of certain gemstones, the PRIM II is able to measure a wider range of R.I value from 1.000 to ~3.000, therefore covering the commonly known gemstones in the market and can also measure RI of diamonds, moissanite and other diamond simulants such as high zircon, strontium titanate, etc.

In addition, a fast and clean test can be easily done with the PRIM II, without the inconvenience and messiness of R.I liquid used in the traditional refractometer.

The PRIM II also comes bundled with a CD featuring new software that provides a database of more than 50 gemstones with their various properties and possible origins, and a program that enables the user to enter known properties of the gemstone such as color, S.G. value, hardness, etc to ascertain what possible gemstone it is from the database information.

Features

• Pinhole-sized light reflectivity measure on wide oval platform
• Cover cup with blackout interior to ensure light reflectivity measure is accurate
• Instantly displays direct R.I reading on digital index LED display panel
• In-built Refractive Chart for referencing diamonds and simulants above R.I reading of 1.8
• In-built 8-piece gemstone holder
• Pocket-sized Refractive Index Chart pull-out with R.I readings for 55 stones
• PRIM II complementary software to help users find out the possible colored gemstone using data on various gemstone properties
• Gemstone Dictionary in software with 57 gemstones’ properties (R.I, Color, Hardness, S.G. Value), country of origin and related information
• A USB port for alternative power source and connectivity

Benefits

• Estimates diamonds, moissanite and gemstones’ R.I instantly, thereby allowing identification of possible stones
• Able to test a wide range of R.I values from 1.000 – 3.000, more than a traditional refractometer
• No need for messy R.I liquids
• Tests on transparent gemstones, with flat polished surfaces
• Continual elimination of possible gemstones via software program through input of known values such as R.I, color, hardness, and S.G.
• Ideal for separation of gemstones
• Clear and visible display for ease of reading results
• No waiting time between tests
• Simple and easy to use
• Light and compact tester
• Runs on batteries or with recommended Presidium AC adaptor

This desktop polariscope is very useful in identifying Moissanite, detecting strain diamonds and other gems and separating synthetic amethyst from genuine. Have a built-in light source specially designed for analysing and viewing if a gemstone is doubly (anisotropic) or singly (isotropic) refractive. Consists of two polarised filters one on the top (analyzer) and one on the bottom (polarizer) of the instrument.

Specifications:

• Upper Polariscope Glass Filter
• Rotatable Glass Sample Plate
• Interference Ball
• Detachable Power Cable
• Dimensions : 135mm x 115mm x 70mm
• Power Input : 110V-220V 50Hz
• Set included: 1 x Bench Type Desktop Polariscope
• 2 x Glass rotatable filters

A Dichroscope shows 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.

Specifications:

• Type: Calcite Dichroscope with Stone Holder
• Body: Metal

Set includes:

• 1 x Calcite Dichroscope with stone Holder
• 1 x FREE Leather Case
• 1 x Stylish Packaging Carrying Box

Practical, portable, versatile color-grading light that features both UV short wave and long wave light and comes with a chamber for color grading. The ultraviolet light detects fluorescence in Diamonds, Rubies, Emeralds, and Synthetics. Also, this dark chamber can be used to identify Synthetics from lots. This light has two tubes one for Short Wave (365nm) and the other for Long Wave (254 nm), both lights can be used individually or together for best results. Very economical and convenient gadget to own.

This Fiber optic illuminator provides strong, even and cool daylight illumination. It comes with 150 Watt (15V) Halogen light source and dual gooseneck lights. The inside fan design also allows the unit to work with very low noise. This cool high-intensity lighting system is excellent for Gemological, Biological and Electronic applications. The light intensity can be varied according to requirement with a knob. A portable device which can be used with any microscope to illuminate the specimen. The bulb is easily replaceable. This IC based device has strong internal circuit board for heavy duty working and long life.

Diamond Color Grading Set, Available in one-carat size, a set of 10 stones (color range from D-M). Comes with an attractive case. The unique grading display/container is made of color grading-approved white acrylic & is equipped with a built-in grading tray. All stones are laser-inscribed with Color Letters for easy identification and handling. These CZ stones are made with Nano Technology in Japan with the highest standards of production. These stones have a 10-year warranty for the color. 

Portable Density Determination Kit with Diamond Scale is a perfect companion for gemologists who are on the move and need to find the Specific gravity of any stone. It is a small unit and can be stored in your bag pack. It comes with a diamond scale which has a max capacity of 100 carats and an error of 0.01 carat. This handy unit comes with a separate box for the density kit and case for the scale.

Includes the following:

- Professional gem microscope with a zoom range of 7x-45x

- Gem refractometer with CZ testing table

- Polariscope with conoscope

- UV chamber with true SW/LW

- Cold light source with fiber optic cable

- Diffraction grating spectroscope

- Penlight

- 10x loupe

- Dial Gauge leverage type

- Diamond tester

- 6500K daylight

- Calcite dichroscope

- Chelsea filter

- Hardness pencil

- Diamond weighing scale

- Gem tweezer