Motic GM161 Zoom Jewelry Microscope and Case

List Price: $1,594.00

Starting at: $1,435.00

SKU: GM161

Availability: In stock

  • Zoom magnification range 7.5X - 45X
  • Classic SMZ161 stereo microscope head
  • Rotatable stand for ease of client viewing
  • Generous 110mm Working Distance
  • Gem clamp for multiple-facet inspection
  • Binocular or trinocular viewing head
  • Aluminum carrying case included
  • Lifetime Limited Warranty
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  • Motic GM161 Zoom Jewelry Microscope
  • Motic GM161 Zoom Jewelry Microscope trinocular


The GM161 gem microscope combines the classic Motic SMZ161 7.5X-45X stereo microscope head with a modern brightfield/darkfield gem stand in an efficient, affordable tool for the gemological and precious minerals industry. Rugged and precise, the GM161 optics help users perform identification and analysis quickly and efficiently, while a generous 110mm working distance allows easy access and manipulation of the gem. Available in binocular or trinocular version for digital documentation, they feature a swivel base which rotates 360 degrees and tilts 45 degrees to assist client viewing. The microscope comes with a foam-padded aluminum carrying and storage case. Lifetime Limited Warranty.

Microscope Head

The SMZ161 stereo head is an excellent choice for jewelry and gem stone inspection at an affordable price. The parfocal zoom ratio is 6:1, offering a magnification range of 7x-45x with dual-sided zoom controls and a working distance of 110mm. The head is inclined 45° and includes sliding interpupillary adjustment of 50mm-75mm.

High Eyepoint widefield 10X/F.N.20 eyepieces come standard, offering a broad field of view ranging from 30.67mm to 1.33mm. Optional eyepiece powers include 15X and 20X, for additional magnification of 67.5X and 90X respectively, without the loss of working distance. Finally, the microscope is available in binocular or trinocular format to easily capture digital images for documentation, promotion or client use. Please note that a trinocular adapter is required to fit your camera.

Illumination & Stage

Brightfield / Darkfield illumination is from powerful and consistent 6V30W variable-intensity Halogen with an aperture diaphragm adjustable from 41mm to 2mm. This allows depth of field and contrast control for easier stone identification. Incident illumination is provided by a 7-watt, 6000-degree color temp fluorescent light box on a flexible goose neck arm. The stage offers two mounting points for a gem holder and inclusion pointer along with adaptation for optional contrasting methods like immersion or polarization.


The professional gem stand features dual focus controls for precise movement through 125mm of vertical range, to accommodate different gems and stones. An integral swivel base allows 360-degree rotation and the arm inclines 45 degrees for flexible viewing positions by jeweler or client.

Accessories include 100V-240V power supply, wire gem clamp, foam-padded aluminum carrying case. Motic Binocular part # 1100201300101; Trinocular part # 1100201300114.

Specifications of Component Options

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  • GM161B Zoom Binocular Jewelry Microscope

    GM161T Zoom Trinocular Jewelry Microscope
    SKU GM161BGM161T
    Notes Motic Part number 1100201300101 Motic Part # 1100201300114
    MAP Copy MAP - MoticMAP - Motic
    Head Type BinocularTrinocular
    Optical Design Greenough ConvergedGreenough Converged
    Ocular Angle 45°45°
    Diopter Adjustment SingleSingle
    Magnification Type ZoomZoom
    Interpupillary Adjustment Linear SlidingLinear Sliding
    Head Rotation 360 Degrees360 Degrees
    Minimum Objective (X) 7.5X7.5X
    Maximum Objective (X) 45X45X
    Zoom Ratio 1:61:6
    Zoom Control Type Smooth ContinuousSmooth Continuous
    Zoom Indicator Graduations YesYes
    Parfocal YesYes
    Includes Eyepieces? YesYes
    Included Eyepieces (X) 10X10X
    Body Material Mixed Metal/PlasticMixed Metal/Plastic
    Coating Type Durable PowdercoatDurable Powdercoat
    Focus Controls CoarseCoarse
    Stand Class PedestalPedestal
    Stand Features Inclinable, Rotatable SwivelInclinable, Rotatable Swivel
    Stage Plate Gem Clamp, Large Gem Stage PlateGem Clamp, Large Gem Stage Plate
    Base Width 236mm236mm
    Base Depth 306mm306mm
    Coating Type (Stand) Durable PowdercoatDurable Powdercoat
    Illumination Type Halogen, FluorescentHalogen, Fluorescent
    Illumination Style Transmitted, Incident, Brightfield/DarkfieldTransmitted, Incident, Brightfield/Darkfield
    Power Supply 110V/240V110V/240V
    Incident Light Type FluorescentFluorescent
    Incident Light Specification 7W 6000 Degree Color Temp7W 6000 Degree Color Temp
    Incident Light Control VariableVariable
    Transmitted Light Type HalogenHalogen
    Transmitted Light Specification 6V30W6V30W
    Transmitted Light Control VariableVariable
    Max Working Distance (standard) 110mm110mm
    Imaging Compatibility (with adapters) 23mm 23mm
    Reticles Available? YesYes
    Reticle Diameter (10X Eyepiece) 25mm25mm
    Included Extras Dust Cover, Aluminum Carry Case, Wire Gem HolderDust Cover, Aluminum Carry Case, Wire Gem Holder
    Case Included? YesYes