OPTIGEM-20 Trinocular Stereozoom Microscope for Gemology

OPTIGEM-10 Binocular Stereozoom Microscope for Gemology

Gemological stereomicroscopes are meant to help with stone inspection. Jewels and gems have a variety of grades (or quality levels), which ultimately influence their value and cost on the market; therefore it is important to have solutions that are purposely designed for gemology. These stereomicroscopes are equipped with iris and darkfield condenser on the bottom light source, and with a set of on stage tweezers to hold the stone in place.

The OPTIGEM series are two-in-one gemology instruments that can be used both in vertical and horizontal position in a very easy way, just by turning one knob (no disassembling and re-assembling operations are required). The horizontal position extends the use of a gemological microscope, giving the possibility to perform immersion analysis by submerging a sample in liquid. If the stone’s refractive index is close to the liquid’s one, immersion makes the interior more visible by reducing the effects of refraction and surface reflection. This enables you to see a gem’s inclusions or color distribution more easily.

Key Features

Observation mode: Brightfield, darkfield.
Heads: Trinocular, 45° inclined, 360° rotating.
Interpupillary distance: Adjustable between 51 and 75 mm.
Dioptric adjustment: On both eyepiece tubes.
Eyepieces: WF10x/21 mm, high eye-point.
Objective: Parfocal achromatic zoom 0.7x…4.5x (zoom factor 6.43:1).
Working distance: 100 mm.
Specimen stage: Gemological stage, with clamp for holding gems.
Focusing: Rack and pinion mechanism controlled by a pair of knobs.
Stand: Fixed arm stand with tilting system (with position lock control). It can be totally overturned and rotated allowing in this way to obtain a 2-in-one instrument: an instrument for standard observations and one for observation of water-immersed gems.
Darkfield illumination: Equipped with a state-of-the-art illuminator for darkfield observation. It consist of an innovative side-emmiting LEDs ring with an emission angle of 38°. With brightness control.
Transmitted light llumination: Equipped with a LED illuminator, located under the stage. With brightness control.
Incident illumination: Equipped with a flexible gooseneck-arm 4LED illuminator. With brightness control.
Colour temperature: Pure white 6,300 K

Product Code: OM-OPTIGEM-20
Brand: OPTIKA
Model: OPTIGEM-20 Gemological Stereomicroscope
Size: 480mm height x 210mm base width
Head: Trinocular
Eyepiece: WF 10x/21 mm
Objectives: Parfocal achromatic zoom 0.7x…4.5x (zoom factor 6.43:1)
Magnification: 10x
Focusing: Rack and pinion focusing mechanism controlled by a pair of knobs.
Darkfield illumination: Side-emmiting LEDs ring with an emission angle of 38°. With brightness control.
Transmitted light llumination: LED illuminator, located under the stage. With brightness control.
Incident illumination: Flexible gooseneck-arm 4LED illuminator. With brightness control.
Power: Mains