{"product_id":"kruss-ksw4000-diamond-gemstone-stereo-microscope","title":"KRÜSS Stereo Gemstone Microscope – 10x\/30x with Dark-Field Illumination | KSW4000","description":"\u003cp\u003eThe A.KRÜSS KSW4000 Stereo Gemstone Microscope is a professional gemmological microscope designed for the detailed examination of diamonds, gemstones, inclusions and internal characteristics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCombining high-quality stereo optics with 10x and 30x magnification, LED incident and transmitted lighting, and a dark-field condenser, it delivers sharp, detailed images across a wide field of view.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEquipped with a rotatable stone holder, adjustable eyepieces and interchangeable specimen plates, the KSW4000 is an excellent choice for gemmologists, diamond graders, jewellers, gemstone dealers and professional jewellery workshops.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10x \u0026amp; 30x Magnification – Two magnification levels for examining gemstones and identifying fine details.\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Stereo Optics – Sharp, three-dimensional viewing with a wide field of view.\u003c\/li\u003e\n\u003cli\u003eDark-Field Illumination – Helps reveal low-contrast inclusions, internal features and their outlines.\u003c\/li\u003e\n\u003cli\u003eLED Incident \u0026amp; Transmitted Lighting – Flexible illumination for different gemstone examination techniques.\u003c\/li\u003e\n\u003cli\u003eRotatable Stone Holder – Allows gemstones to be positioned and examined from different angles.\u003c\/li\u003e\n\u003cli\u003e45° Inclined Eyepieces – Comfortable viewing during detailed inspection.\u003c\/li\u003e\n\u003cli\u003eAdjustable Eye Distance \u0026amp; Dioptres – Individual adjustment for comfortable binocular observation.\u003c\/li\u003e\n\u003cli\u003eInterchangeable Contrast Plates – Glass and black\/white plates for different examination requirements.\u003c\/li\u003e\n\u003cli\u003eRechargeable Battery – Supports location-independent operation.\u003c\/li\u003e\n\u003cli\u003eProfessional A.KRÜSS Instrument – Designed for gemmological examination and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Dark-Field Illumination for Gemstone Inclusions\u003cbr\u003e\u003c\/strong\u003eThe KSW4000 dark-field condenser is particularly useful for examining inclusions and internal characteristics in transparent gemstones.\u003c\/p\u003e\n\u003cp\u003eDark-field illumination helps make low-contrast inclusions and their outlines easier to observe against a darker background. This is valuable when studying internal features, growth structures and other characteristics relevant to gemstone identification and evaluation.\u003c\/p\u003e\n\u003cp\u003eThe microscope also offers incident light for illumination from above and transmitted light for examination using light passing through the specimen.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Stereo Optics – 10x \u0026amp; 30x Magnification\u003cbr\u003e\u003c\/strong\u003eThe KSW4000 features 10x widefield eyepieces and a rotating objective system with 1x and 3x objectives, providing two standard magnifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10x Magnification: For general gemstone observation and locating features.\u003c\/li\u003e\n\u003cli\u003e30x Magnification: For closer examination of inclusions, surfaces and fine details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 45° inclined binocular viewing head, adjustable interpupillary distance and dioptre adjustment help users achieve a clear, comfortable image.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for Diamond \u0026amp; Gemstone Examination\u003cbr\u003e\u003c\/strong\u003eThe KSW4000 is suitable for professional examination of diamonds, coloured gemstones and jewellery stones.\u003c\/p\u003e\n\u003cp\u003eTypical applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDiamond Inspection: Examining visible inclusions, surface features and internal characteristics.\u003c\/li\u003e\n\u003cli\u003eGemstone Identification: Studying features that may assist gemmological identification.\u003c\/li\u003e\n\u003cli\u003eClarity Assessment: Observing inclusions and characteristics relevant to diamond and gemstone clarity.\u003c\/li\u003e\n\u003cli\u003eGemstone Quality Control: Checking stones before setting, purchasing or further examination.\u003c\/li\u003e\n\u003cli\u003eJewellery Workshops: Inspecting gemstones and stone-mounted jewellery where accessible.\u003c\/li\u003e\n\u003cli\u003eGemmological Education: Teaching and practising microscopy techniques.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eThe microscope can support the visual examination involved in diamond quality assessment, including characteristics relevant to the 4Cs: colour, clarity, cut and carat weight. However, accurate colour grading, cut evaluation and carat-weight determination require appropriate additional methods or instruments; microscopy alone does not establish all four grades.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRotatable Stone Holder \u0026amp; Flexible Specimen Positioning\u003cbr\u003e\u003c\/strong\u003eThe microscope includes a rotatable stone holder and specimen clamps to help position stones securely during examination.\u003c\/p\u003e\n\u003cp\u003eThe stone holder allows the viewing angle to be changed without repeatedly handling the gemstone, making it easier to inspect different facets and internal features.\u003c\/p\u003e\n\u003cp\u003eThe interchangeable glass and black\/white contrast plates provide additional flexibility when examining different specimens.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Use the KSW4000 Gemstone Microscope\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ePosition the Gemstone: Place the specimen on the appropriate plate or secure it using the rotatable stone holder or specimen clamp.\u003c\/li\u003e\n\u003cli\u003eSelect the Illumination: Choose incident light, transmitted light or dark-field illumination according to the examination.\u003c\/li\u003e\n\u003cli\u003eAdjust the Viewing Head: Set the eyepiece distance to match your eyes.\u003c\/li\u003e\n\u003cli\u003eFocus the Image: Release the head locking screw if adjustment is required, position the head and use the focus control until the image becomes sharp. Secure the head before continuing.\u003c\/li\u003e\n\u003cli\u003eAdjust the Dioptres: Focus using the right eyepiece, then adjust the left eyepiece independently to obtain a comfortable binocular image.\u003c\/li\u003e\n\u003cli\u003eChange Magnification: Rotate the objective housing by 180° to switch between the 10x and 30x magnification settings.\u003c\/li\u003e\n\u003cli\u003eInspect the Stone: Rotate or reposition the gemstone to observe inclusions, surface details and internal characteristics from different angles.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe microscope's three-way lighting switch selects the available illumination modes. Use the manufacturer's operating instructions for the exact switch positions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVertical \u0026amp; Horizontal Assembly Options\u003cbr\u003e\u003c\/strong\u003eThe KSW4000 manual provides instructions for both vertical and horizontal microscope configurations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVertical Assembly: The vertical setup uses the binocular microscope head, specimen stage, interchangeable plates and stone holder for conventional downward gemstone examination. The manual also shows installation of the incident-light light guide at the rear lamp holder.\u003c\/li\u003e\n\u003cli\u003eHorizontal Assembly: The horizontal configuration uses a horizontally mounted pillar, vertically installed specimen stage, polarisation device, stone holder and optical cell. This arrangement supports alternative gemstone viewing and examination methods.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose the A.KRÜSS KSW4000?\u003cbr\u003e\u003c\/strong\u003eThe A.KRÜSS KSW4000 combines high-quality stereo optics, dual magnification, versatile LED illumination and dedicated gemstone-holding accessories in one professional instrument.\u003c\/p\u003e\n\u003cp\u003eIts dark-field condenser is especially valuable for examining low-contrast gemstone inclusions, while the rotatable stone holder and adjustable viewing system make detailed inspection more convenient.\u003c\/p\u003e\n\u003cp\u003eAn excellent choice for gemmologists, diamond professionals, jewellery manufacturers, gemstone dealers and laboratories seeking a versatile stereo microscope for gemstone observation and quality control.\u003c\/p\u003e","brand":"DAVTOOLS","offers":[{"title":"Default Title","offer_id":64952917197177,"sku":"MIC-4009-KRUS-KSW4000","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/0718\/9569\/files\/KRUSSKSW4000-01-01.jpg?v=1792532821","url":"https:\/\/davtools.com\/products\/kruss-ksw4000-diamond-gemstone-stereo-microscope","provider":"DAVTOOLS","version":"1.0","type":"link"}