{"product_id":"zvi-yehuda-rough-diamond-colorimeter-f50-f1000","title":"COLORIMETRO","description":"\u003cp\u003eThe ZVI Yehuda Rough Diamond Colorimeter is a professional instrument designed for fast and consistent colour evaluation of rough diamonds. Available in F-50 and F-1000 models, it predicts diamond colour across the D–K range with approximately ±½ colour grade accuracy and provides a measurement result in approximately 5 seconds. The supplied F-50 documentation confirms the D–K range, ±½ grade accuracy and 5-second measurement time.\u003c\/p\u003e\n\u003cp\u003eBeyond basic colour evaluation, the instrument provides information on fancy yellow colour, blue and yellow fluorescence, brown hue and Type IIa\/IIb characteristics, making it a powerful tool for professional rough diamond assessment and purchasing decisions.\u003c\/p\u003e\n\u003cp\u003eThe colorimeter can also evaluate suitable coated diamonds and provides a stone signature that can be followed from rough through to polished diamond.\u003c\/p\u003e\n\u003cp\u003eKey Features\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eD–K rough diamond colour prediction\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eApprox. ±½ colour grade accuracy\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFast 5-second measurement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMeasures Fancy Yellow colour grades\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFancy results include Light, Fancy, Intense and Vivid Yellow\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetects blue fluorescence\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetects yellow fluorescence, which can indicate cloudiness or milkiness\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetects brown hue within the D–F colour range\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType IIa detection to assist in determining HPHT suitability\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType IIb detection for evaluation of blue diamonds\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMeasures suitable coated diamonds\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStone signature can be followed from rough to polished\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRechargeable for portable professional use\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e110\/220V operation\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned for professional diamond dealers, manufacturers and rough diamond specialists\u003cbr\u003eDiamond Colour \u0026amp; Fluorescence Analysis\u003c\/p\u003e\n\u003cp\u003eThe colorimeter measures rough diamonds across the D–K colour range and also provides dedicated evaluation for fancy yellow diamonds. The F-50 documentation specifies five fancy-yellow result categories: No Fancy Yellow, Light Fancy Yellow, Fancy Yellow, Intense Yellow and Vivid Yellow.\u003c\/p\u003e\n\u003cp\u003eBlue fluorescence is classified across five levels: None, Faint, Light, Medium and Strong. The instrument also detects yellow fluorescence, which may indicate cloudiness or milkiness within the stone.\u003c\/p\u003e\n\u003cp\u003eBrown hue analysis is provided within the D–F colour range.\u003c\/p\u003e\n\u003cp\u003eThe colorimeter provides additional information on Type IIa diamonds, including indications relevant to assessing whether a rough diamond may be suitable for HPHT treatment.\u003c\/p\u003e\n\u003cp\u003eIt also provides Type IIb blue\/grey diamond results. According to the supplied F-50 documentation, a Type IIb blue result indicates that the stone was not radioactively irradiated to change its colour to blue, although it may alternatively indicate a synthetic stone.\u003c\/p\u003e\n\u003cp\u003eTwo Models Available\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZVI Yehuda F-50\u003c\/strong\u003e\u003cbr\u003eModel: F-50\u003cbr\u003eSuitable Rough Diamond Weight: 0.30–50 ct\u003cbr\u003eColour Range: D–K\u003cbr\u003eWeight: Approx. 1.1 kg\u003cbr\u003eHeight: 9 cm\u003cbr\u003eWidth: 8.8 cm\u003cbr\u003eLength: 15 cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZVI Yehuda F-1000\u003c\/strong\u003e\u003cbr\u003eModel: F-1000\u003cbr\u003eSuitable Rough Diamond Weight: 0.30–1000 ct\u003cbr\u003eColour Range: D–K\u003cbr\u003eWeight: Approx. 1.3 kg\u003cbr\u003eHeight: 10 cm\u003cbr\u003eWidth: 9.8 cm\u003cbr\u003eLength: 16 cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe key difference is capacity: choose the F-50 for rough diamonds from 0.30–50 ct, or the F-1000 for exceptionally large rough stones up to 1000 ct.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBrand \/ Manufacturer: ZVI Yehuda Ltd.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct Type: Rough Diamond Colorimeter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eModels Available: F-50 \/ F-1000\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColour Measurement Range: D–K\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eColour Accuracy: Approx. ±½ colour grade\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMeasurement Time: Approx. 5 seconds\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFancy Yellow Evaluation: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlue Fluorescence Detection: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eYellow Fluorescence Detection: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrown Hue Detection: D–F colour range\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType IIa Detection: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eType IIb Detection: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoated Diamond Measurement: Yes, subject to measurement requirements\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower: 110\/220V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: Rechargeable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Time: Approx. 15–16 hours depending on specification\/model\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eF-50 Capacity: 0.30–50 ct\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eF-1000 Capacity: 0.30–1000 ct\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: The supplied F-50 manual specifies approximately 16 hours of operation from a full charge and approximately 5 hours for recharging.\u003c\/p\u003e\n\u003cp\u003eIdeal For: Rough diamond dealers, Diamond manufacturers, Diamond buying offices, Diamond cutters and polishers, Gemmologists, Diamond laboratories, Professional rough diamond evaluation, Diamond colour prediction, Fancy yellow diamond assessment, Type IIa and Type IIb evaluation, Fluorescence and brown hue assessment\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhy Choose the ZVI Yehuda Rough Diamond Colorimeter?\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe ZVI Yehuda Colorimeter goes beyond conventional colour prediction by combining D–K colour evaluation with fancy yellow analysis, fluorescence detection, brown hue measurement and Type IIa\/IIb information.\u003c\/p\u003e\n\u003cp\u003eWith results available in approximately 5 seconds, rechargeable operation and two capacities available, it provides a practical professional solution for evaluating rough diamonds before cutting and polishing.\u003c\/p\u003e","brand":"I.DAVID Store","offers":[{"title":"Default Title","offer_id":45284043981102,"sku":"GMI-7011","price":40000.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/9309\/0350\/files\/ZVI_YEHUDA-01.jpg?v=1788705122","url":"https:\/\/idavid.be\/it\/products\/zvi-yehuda-rough-diamond-colorimeter-f50-f1000","provider":"I.DAVID","version":"1.0","type":"link"}