--- title: "Blog Series: What the 4Cs Mean in 2020: Part 4: Clarity Grading" description: In the last part of Sarine's special blog series 'What the 4Cs Mean in 2020', learn everything you need to know about our AI-based clarity grading. image: https://blog.sarine.com/hubfs/AI%20Clarity%20Grading.png --- [![Sarine](https://blog.sarine.com/hubfs/Sarine_April2019%20Theme/Image/sarine.svg) THE DIAMOND INDUSTRY, REIMAGINED™](https://sarine.com/) search Verify Report Products demo En - [简体中文](http://sarine.com/sarine-profile/?lang=zh-hans) - [繁體中文](http://sarine.com/sarine-profile/?lang=zh-hant) ### **Interested in Sarine products?** Complete the form and we’ll contact you shortly Close En - [简体中文](http://sarine.com/sarine-profile/?lang=zh-hans) - [繁體中文](http://sarine.com/sarine-profile/?lang=zh-hant) - [日本語](http://sarine.com/sarine-profile/?lang=ja) Products demo - Products - [All Products](https://sarine.com/?product_category=all-products) - ROUGH PURCHASING - [Advisor® (Tenders)](https://sarine.com/products/sarine-advisor/) - 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Share! - - ![AI Clarity Grading](https://blog.sarine.com/hubfs/AI%20Clarity%20Grading.png) # Blog Series: What the 4Cs Mean in 2020: Part 4: Clarity Grading A perfectly flawless diamond is extremely rare. So rare, in fact that flawless diamonds are highly prized and very expensive. Most diamonds naturally develop “birthmarks” during the long formation process that occurs over millions or even billions of years, deep in the earth. When the birthmark occurs on the surface of the diamond, it is called a “flaw”. When the birthmark is found in the diamond’s internal structure, it is known as an “inclusion”. There are many different types of birthmarks that occur on or in a diamond, differentiated by their shape and appearance. Some common types of birthmarks include “clouds”, internal inclusions with a hazy, cloudy appearance, “blemishes” that appear on the diamond surface, occurring naturally or as part of the cutting process, and “pits”, small indents on the diamond surface that may take on the appearance of pitting. The type and location of a inclusions that occur in a rough diamond have a direct impact on the way it will be cut and polished. Every diamond cutter’s ideal is to polish a diamond with flawless clarity. However, this is rarely the case, and diamond manufacturers must follow the standard clarity grading scale to determine the diamond’s visual clarity, beauty and hence, its value. ## How Clarity Grading Works, and How It Can Improve Clarity is a measure and grading of the diamond's appearance with regards to inclusions or blemishes, “birthmarks” that occur during the natural formation process. Clarity is measured on a grading scale, from Flawless (excellent Clarity, no inclusions), to Included (poor Clarity, many inclusions). Clarity grade has traditionally been determined by a diamond specialist who examines the diamond through a loupe (jeweler’s magnifying glass) and grades the diamond by comparing it to the standard clarity grading scale. The challenge with clarity grading has always been the very human issue of subjectivity. There are so many types of inclusions, and there are infinite possible constellations of the way a diamond’s birthmarks can occur. This makes the process of manually grading diamonds for their clarity very complex and inconsistent. Human capability for 100% objectivity does not exist, and therefore, clarity grading that is only based on human interaction with the diamond can never be non-biased. That’s where artificial intelligence technology can help. [![Read - Blog Series: What the 4Cs Mean in 2020 - Part 2: Cut Grading](https://no-cache.hubspot.com/cta/default/5379636/3f10e196-499d-48da-9d2c-b73c64d625c7.png)](https://cta-redirect.hubspot.com/cta/redirect/5379636/3f10e196-499d-48da-9d2c-b73c64d625c7) ## AI-Based Clarity Grading - Objective & Consistent In late 2016, Sarine announced the development of t[he first clarity grading device based on](https://phys.org/news/2016-11-israeli-machine-standardize-diamond-grading.html) [machine learning](https://phys.org/news/2016-11-israeli-machine-standardize-diamond-grading.html), the Sarine Clarity™. The technology uses artificial intelligence to measure, analyze and assign a grade of a diamond’s clarity, based on the inclusions and flaws detected by the advanced scanning and mapping methods. The device then uses the gathered data, which accumulates over time as the system analyzes more and more diamonds, to develop a standardized approach to clarity grading that is far more reliable and accurate than human only grading. Wholly computerized, the clarity grading process is no longer vulnerable to subjective, human perception. In short: Contrary to manual grading, where the person is naturally subject to fatigue and overwork, increasing the risk of reduced accuracy over time, machine learning gets smarter over time, with access to a mass of diamond clarity data that is constantly growing, helping the device’s algorithms to better “learn” and understand clarity patterns and assign a more accurate grade. [![Read - Blog Series: What the 4Cs Mean in 2020 - Part 3: Color Grading](https://no-cache.hubspot.com/cta/default/5379636/b2072f5e-b8e0-40dc-beeb-5212432c3eff.png)](https://cta-redirect.hubspot.com/cta/redirect/5379636/b2072f5e-b8e0-40dc-beeb-5212432c3eff) ## Beyond Clarity Grading Furthermore, the Sarine Clarity™ system can be used to sort the diamonds into sub-categories according to pre-defined clarity criteria. This means that diamond manufacturers and traders can ensure that they supply diamonds that are optimally graded for clarity and valued for the right sales market. According to David Block, CEO of Sarine, in [an interview with The New Jeweller magazine](http://www.tnjtv.com/Issues/Int/V13_I4/V13_I4.html?utm_content=98598696&utm_medium=social&utm_source=facebook&hss_channel=fbp-363859540464226), “The supply chain is going through changes due to technology. Even the way diamonds are sourced and sold will change. Manufacturers for very many years have been buying boxes of diamonds which are not all the kinds of goods they need and can use and that means they have to find clients for these goods. This will change in the future to make the process more efficient.” The potential of Sarine Clarity™ is not just a revolutionary approach to clarity grading - it is also the recalibration of the sourcing and sales process for diamonds worldwide. AI-based clarity grading is currently available at Sarine Technology labs in Israel and India. [Find out more about Sarine Lab services here.](https://sarine.com/sarine-lab/) --- ### MORE FROM THE DIAMOND BLOG ![25 years of Setting the Standard](https://blog.sarine.com/hs-fs/hubfs/blog%20GCAL.jpg?width=310&name=blog%20GCAL.jpg) #### 25 years of Setting the Standard 17 June 2026 [0 Comments](https://blog.sarine.com/gcal-25-years?hsLang=en) - - ![The 2nd Generation of Automated Diamond Color Grading](https://blog.sarine.com/hs-fs/hubfs/2026%20blog%20colors.jpg?width=310&name=2026%20blog%20colors.jpg) #### The 2nd Generation of Automated Diamond Color Grading 30 March 2026 We are often asked: when did Sarine launch AI-based grading? 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[0 Comments](https://blog.sarine.com/why-the-heart-and-the-tech-must-work-together-in-the-diamond-sales?hsLang=en) - - ![The Restless Diamond Brief: Curiosity, AI, and Bankable Outcomes](https://blog.sarine.com/hs-fs/hubfs/2025%20blog%20Romy%20briefs%20prompts%20cover-1.jpg?width=310&name=2025%20blog%20Romy%20briefs%20prompts%20cover-1.jpg) #### The Restless Diamond Brief: Curiosity, AI, and Bankable Outcomes 07 September 2025 *By Romy Gakh-Baram, Director of Brand and Global Marketing, Sarine* [0 Comments](https://blog.sarine.com/the-restless-diamond-brief-curiosity-ai-and-bankable-outcomes?hsLang=en) - - ![Sarine white logo](https://blog.sarine.com/hubfs/Sarine_April2019%20Theme/Image/sarine_profile-logo-new-white.png) The diamond industry, reimagined ![Map](https://blog.sarine.com/hubfs/Sarine_April2019%20Theme/Image/footer_placeholder-map.png) - Headquarters - africa - americas - asia - europe - australia - Middle east - PRODUCTS - [All Products](https://sarine.com/?product_category=all-products) - [Rough Purchasing](https://sarine.com/?product_category=rough-purchasing) - [Inclusion Scanning](https://sarine.com/?product_category=inclusion-scanning) - [Laser Processing](https://sarine.com/?product_category=laser-processing) - [Cut & Symmetry](https://sarine.com/?product_category=cut-symmetry) - [Light Performance](https://sarine.com/?product_category=light-performance) - [Diamond Imaging](https://sarine.com/?product_category=diamond-imaging) - ABOUT SARINE - [About Sarine](https://sarine.com/about-us/about_sarine/) - [Contact Us](https://sarine.com/contactus/headquarters/) - [Our Core Values](https://sarine.com/about-us/our-core-values/) - [Subsidiaries](https://sarine.com/about-us/subsidiaries/) - [CSR](https://sarine.com/about-us/social-corporate-responsibility/) - [Careers](https://sarine.com/careers/) - NEWS - [Events & Exhibitions](https://sarine.com/about-us/events-exhibitions/) - [Blog](https://blog.sarine.com//) - SUPPORT - [Support Files](https://sarine.com/support/) - [Remote Support](http://download.teamviewer.com/download/TeamViewer_Setup-ckq.exe) - [PC Requirements](https://sarine.com/recommended-computer-requirements/) - INVESTOR RELATIONS - [Corporate Information](http://sarine.listedcompany.com/home.html) - [Financial Information](http://sarine.listedcompany.com/financials.html) - [Newsroom](http://sarine.listedcompany.com/newsroom.html) - [Stock Information](http://sarine.listedcompany.com/stock_fundamentals.html) - [Information Request](http://sarine.listedcompany.com/contact.html) #### follow us - - - Sarine Technologies Ltd. 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