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Description
Grade internal diamond inclusions and verify raw gemstone crystal structures using the Euromex NexiusZoom Evo NZ.1703-GEML Trinocular professional gemological microscope. Powered by an upgraded 0.65x to 5.5x Greenough zoom engine (8.4:1 zoom ratio), it provides continuous magnification from 6.5x up to 55x. What makes this instrument indispensable for appraisers is its specialized gemological base: it tilts continuously from 0 degrees (flat) up to 45 degrees, allowing gemologists to inspect gemstone facets from comfortable, fatigue-free viewing angles without hunching over the bench.
Transmitted illumination is supplied by an intense 30W halogen bulb housed in the base, focused through an integrated darkfield condenser with an adjustable manual iris diaphragm. That warm halogen spectrum renders subtle interior feather flaws, cleavage lines, and mineral inclusions with authentic optical color metrics. A flexible 1W LED incident gooseneck spotlight targets exterior facets to evaluate surface luster. The 45-degree inclined trinocular head features an integrated 23.2 mm photo port with beam splitter, ultra-widefield HWF 10x/23 mm eyepieces, and a rotatable 360-degree gem clamp fixture across a 9.5 kg cast-metal frame.
Key Features of Euromex NexiusZoom Evo NZ.1703-GEML Trinocular
A specialized trinocular gemological stereo zoom microscope featuring an ergonomic 0-to-45 degree tilting base and an iris-controlled darkfield well. Combines a 30W halogen transmitted lamp, 1W LED incident gooseneck, flexible gem clamp, and vertical photo port.
- Continuous 6.5x to 55x zoom range driven by an upgraded 0.65x to 5.5x Greenough engine
- Specialized gemological base tilts smoothly from 0 degrees up to 45 degrees for posture relief
- Integrated darkfield condenser well with internal manual iris diaphragm control
- High-output 30W transmitted halogen lamp provides true color metrics for inclusion grading
- Flexible 1W incident LED gooseneck spotlight targets exterior facet luster and cuts
- Dedicated vertical 23.2 mm photo port with mechanical beam splitter for digital archiving
- Rotatable gem clamp fixture rotates 360 degrees over the central darkfield aperture
- Substantial 9.5 kg metal chassis with dual independent rotary dimmer controls
Transmitted Darkfield Halogen Well & Inclusion Grading
Standard brightfield illumination often washes out faint interior inclusions in diamonds and colored stones. The darkfield condenser directs high-intensity halogen light obliquely through the gem’s pavilion, illuminating internal fractures, mineral crystals, and liquid veils like bright stars against an ink-black background. The adjustable iris diaphragm lets you stop down the light well to block glare around stone perimeters, ensuring clean, definitive clarity grading.
0-to-45 Degree Tilting Base & Trinocular Camera Capture
Spending hours evaluating stones on a flat stage leads to severe neck strain. The NZ.1703-GEML solves that by letting you tilt the entire microscope frame back up to 45 degrees, bringing the oculars directly to eye level while you manipulate the 360-degree gem clamp. The vertical camera port lets you output live high-resolution video to archival computers or client displays, making professional appraisal documentation straightforward.
- Tilting base assembly promotes ergonomic posture during prolonged diamond appraisal shifts
- Warm 30W halogen light source reveals authentic colors in emeralds, rubies, and sapphires
- Universal vertical photo channel accepts standard C-mount digital microscope cameras
Euromex Five-Year Gemological Warranty Protection
Euromex covers the NexiusZoom Evo NZ.1703-GEML with a five-year factory warranty covering optical prism paths, zoom gearing, and tilting base mechanics, backed by a two-year warranty on electronic lighting boards. Inside the box: the NexiusZoom Evo trinocular head, specialized tilting gemological base stand with darkfield iris, flexible gem holder clamp, power cord, 23.2 mm photo tube, rubber eyeguards, and user manual.
Euromex NexiusZoom Evo NZ.1703-GEML Gemological Stereo Microscope 6.5x-55x 30W Halogen Transmitted and 1W LED Incident Illumination Specs
| Brand | Euromex |
| Full Model Code / SKU | NZ.1703-GEML |
| Country of Origin | The Netherlands |
| Microscope Type | Professional Trinocular Gemological Stereo Zoom Microscope Station |
| Optical System Type | Greenough Stereo Optical Pathway Design System |
| Observation Tube Type | Trinocular Head Unit with integrated vertical photo channel interface |
| 45° inclined viewing track, 360° rotatable head, adjustable individual interpupillary controls 54-75mm; diopter tuning; tilting stand assembly base tilts from 0° up to 45° for ergonomic gem inspection routines | |
| Eyepiece / Field of Number | HWF 10x / 23 mm (Paired set, ultra-widefield field-of-view layout finish) |
| Nosepiece Design | Fixed dual objective housing path structure with continuous variable zoom controls |
| Objectives Classification | Achromatic Zoom Evo Optical Configuration (Anti-fungus treated, optimized crystal internal inclusion clarity tracing) |
| Objectives Magnification Breakdown | Continuous zoom factor 0.65x to 5.5x tracking click-stop step points for fast calculation setups |
| Total Magnification Range | 6.5x to 55x standard continuous optical zoom magnification limits |
| Focusing Type & Graduation | Dual side manual focus adjustment knobs operating a smooth rack and pinion tracking block integrated into the gem mount base |
| Stage Dimensions & Surface Coating | Gemological workspace stage featuring an integrated darkfield illumination well and equipped with an adjustable, flexible darkfield gem clamp fixture link |
| Stage Travel Range & Controls | Rotatable gem clip fixture tracking full 360° rotation loops over the central light well aperture |
| Condenser Type & Numerical Aperture | Built-in darkfield condenser unit block tracking precise inclusion edge illumination with internal manual iris diaphragm control |
| Illumination Transmitted Type | 30W high-output continuous adjustable halogen light engine located in the base (Provides true color metrics for interior gemstone inclusion grading paths) |
| Illumination Epi-EPI/Reflected | 1W incident LED gooseneck lamp or overhead light rail array targeting exterior facet luster evaluations |
| Light Intensity Management | Dual independent electronic rotary dimmer wheels mounted to the side deck for precise balance of transmitted darkfield and upper incident lights |
| Camera Port / C-Mount Adapter Split | Vertical photo port channel on top of head unit (23.2mm tube interface), beam splitter engagement pathway control |
| Contrast Methods Capability | Transmitted darkfield inclusion profiling, transmitted brightfield macro evaluation, oblique reflected facet reflection tracing, photographic gemstone validation |
| Power Supply & Voltage Input | Internal universal 100-240V AC stabilization power module line links with integrated cable management |
| Physical Dimensions & Net Weight | Base assembly 310 x 230 mm, total height approx. 440 mm, complete assembly net weight approx. 9.5 kg |
| Standard Package Accessories Included | NexiusZoom Evo trinocular head, specialized tilting gemological base stand with darkfield iris, flexible gem holder clamp tool, power cord, photo port extension, eye guards, manual |
| Primary Application & Environment | Gemstone interior inclusion grading, professional diamond verification laboratory analysis, raw mineral crystal identity mapping, high-end jewelry appraisal documentation desks |
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