Gemological Microscopes

Solitaire Microscope (S-508)

The stemi 508 stereo microscope is an optical microscope variant
designed for low to high magnification observation of a Diamond,
typically using light reflected from the surface of an object rather
than transmitted through it.View more

Small DiaScope (S-305)

Mostly DiaScope is used for sorting Natural Loose diamonds of all
small sizes relevant with appropriate size, colour (D to G) & clarity
(IF to I3). Natural Loose Diamonds Small Size Is One Of The Vastly
Selling Loose Diamonds Type In The World.View more

GemScope (S-305)

GemScope is a Horizontal microscope for examination of coloured
gemstones. It is also known as immersion microscope, which is
used for analysis of coloured stones in immersion liquids of
corresponding refractive index.View more

TenderScope (S-305)

As a professional buyers, you are apprehensive about diamond
characteristic, whenever going for purchase the diamond in auction
or in tender, where most of them have some inclusion or
imperfection.View more

Discover Series (V-8 & V-20)

Discover Microscope is extraordinary equipment, which used to
perceive our surroundings in 3D is one of evolution’s most
impressive masterstrokes.View more

Lens Comparison Table

Inter Comparison of Carl Zeiss Stereo Microscopes
Specifications Zeiss
Stemi 305 Stemi 508 Discovery V8 Discovery V20
Optical Concept Greenough Greenough Parallel Optics Parallel Optics
Zoom range 5:1 8:1 8:1 20:1
Zomm Opertion Manual Manual Manual Motorized
Total Magnification with 1x Objective and 10x Eypieces 8x to 40x 6.3x to 50x 10x to 80x 7.5x to 150x
Resolution (lp/mm) 200 220 346 796
Working distance with 1x Objective 110mm 92mm 81 mm with Plan S1x Objective 81mm with Plan Apo S0.63x Objective
Binocular tubes Integrated Integrated Various Binocular / trinocular tubes are available Various Binocular / trinocular tubes are available
Interpupillary Distance 55-75mm 55-75mm 55-75mm 55-75mm
Eyepieces 10X 10X 10X,16X,25X 10X,16X,25X
Field of View number N/A 20 21,23,16,10 21,23,16,10
Object field (mm) 28.8…5.8 36.8…4.6 23.0…2.9 23.0…2.9
Accessories:
Camera Yes Yes Yes Yes
Fluorescence attachment No No Yes Yes
Inter Comparison of Carl Zeiss Stereo Microscopes
General Information (305 General Information (508
Operation concept Stereo microscope, Greenough design with 5:1 zoom range Stereo microscope, Greenough design with 8:1 zoom range
Main Component Lens Body, Stand and Illumination Lens Body, Stand and Illumination
Lens Body Stemi 305 (binocular, incl. eyepieces 10×/23 Br. foc), Stemi 305 doc (phototube, incl. eyepieces 10×/23 Br. foc,) Stemi 508 (binocular, incl. eyepieces 10×/23 Br. foc), Stemi 508 doc (phototube, incl. eyepieces 10×/23 Br. foc,)
Stands Ergonomic design with adjustable in height and inclination for longer use Ergonomic design with adjustable in height and inclination for longer use
Input Power Supply 110 - 240 Volt AC, 60/50 Hz 110 - 240 Volt AC, 60/50 Hz
Optical Data of the Basic and Optional System
Magnification range 8× to 40x with basic version (10× eyepieces, no front optics) all magnifications from 4× to 200× (interchangeable optics) 6.3× to 50x with basic version (10× eyepieces, no front optics) all magnifications from 2× to 250× (interchangeable optics)
Maximum resolution 200 Lp/mm basic version; up to 400 Lp/mm with interchangeable optics 225 Lp/mm basic version; up to 450 Lp/mm with interchangeable optics
Maximum object field 29 mm basic version; up to 58 mm using interchangeable 36 mm basic version; up to 122 mm using interchangeable
Working distance 110 mm basic version; up to 185 mm using interchangeable optics 92 mm basic version; up to 287 mm using interchangeable optics
Stand
Body Light weighted aluminium body
Focusing Manual coarse adjustment with Tilting arm
Illumination
Dark-field Illumination Halogen based Lighting to See diamond structures bright against a dark background