Meet the Diamond Expert Behind Diament Expert

Marta Kłosowska – Diamond Expert

Marta Kłosowska is the lead Diamond Expert at Diament Expert, specializing in the evaluation, selection, and analysis of certified natural diamonds and lab-grown diamonds. Combining an engineering background, years of business experience, and specialized gemological knowledge, she helps clients make informed decisions when purchasing diamonds.

For years, Marta has assisted private clients, investors, and couples searching for the perfect engagement ring diamond, investment diamond, or custom jewelry. Through her personalized approach and detailed analysis of every stone, she has helped hundreds of customers in Poland and internationally find the diamond that perfectly matches their expectations, budget, and long-term goals.

Engineering Background and Analytical Approach

Marta Kłosowska graduated from the Silesian University of Technology with a Master of Science in Engineering.

Her technical education developed strong analytical skills, attention to detail, and the ability to accurately compare quality parameters and evaluate complex data. These competencies are particularly valuable in the diamond industry, where even minor differences in a diamond's characteristics can significantly affect its value.

Before entering the diamond industry, Marta gained years of experience in technical and business sectors, developing expertise in quality assessment, purchasing processes, and customer consulting.

Professional Training and Industry Certifications

To further specialize in the diamond industry, Marta Kłosowska completed professional training programs organized by internationally recognized gemological institutions and continuously updates her expertise according to the latest developments in the global diamond market (last updated: May 2026).

She holds certificates confirming the successful completion of specialized courses in diamond grading and evaluation, including training provided by the International Gemological Institute (IGI)—one of the world's leading gemological organizations.

Continuous professional development allows Marta to stay current with evolving standards for both natural diamonds and lab-grown diamonds, ensuring every client receives accurate, up-to-date, and practical advice.

Hundreds of Satisfied Clients

Marta Kłosowska has personally participated in the selection and sale of hundreds of certified diamonds for both jewelry and investment purposes.

She provides professional assistance with:

• Choosing certified natural diamonds
• Selecting lab-grown diamonds
• Interpreting GIA and IGI diamond certificates
• Evaluating diamond value and purchase opportunities
• Selecting diamonds for engagement rings
• Custom jewelry projects
• Building long-term diamond investment portfolios

Her priority is never to sell a particular stone but to recommend the solution that best fits each client's individual needs.

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Creator of the 9C™ Diamond Evaluation System

One of Marta Kłosowska's original projects is the 9C™ Diamond Evaluation System.

Traditionally, diamonds are evaluated using the internationally recognized 4Cs:

• Carat
• Color
• Clarity
• Cut

Based on years of practical experience, thousands of analyzed diamonds, and extensive cooperation with clients worldwide, Marta developed the proprietary 9C™ methodology, which considers additional factors influencing a diamond's actual beauty, performance, and long-term value.

The 9C™ Diamond Evaluation System helps clients make more informed purchasing decisions by looking beyond the traditional grading report and considering the characteristics that truly distinguish exceptional diamonds.

International Network of Partners and Suppliers

Marta Kłosowska collaborates with leading diamond manufacturers, suppliers, and industry partners from around the world, including cooperation within the Rapaport network.

As a result, Diament Expert provides customers with access to one of the world's largest diamond inventories, currently offering nearly 2 million certified natural and lab-grown diamonds.

This extensive selection enables clients to find the perfect diamond regardless of budget, size, or quality requirements.

Education and Development of Future Diamond Specialists

In addition to advising clients, Marta Kłosowska actively supports the growth of the diamond industry in Poland.

She conducts training sessions, consultations, and partnership programs for individuals interested in expanding their knowledge of diamonds and pursuing a professional career in the diamond industry.

She is also the creator of an innovative business partnership model that helps build local networks of qualified diamond specialists while increasing access to professional diamond consulting across Poland.

Mission

Marta Kłosowska's mission is to improve transparency, customer education, and confidence within the diamond industry.

She believes every customer deserves access to reliable information, fair pricing, and the opportunity to compare multiple certified diamonds before making a purchasing decision.

That vision inspired the creation of Diament Expert—a company that combines expert knowledge, modern technology, and direct access to the global diamond market.

Contact Marta Kłosowska

If you need professional assistance selecting a diamond, reviewing a GIA or IGI certificate, obtaining a diamond valuation, or consulting before purchasing a diamond or custom jewelry, you are welcome to contact Marta directly.

Email: contact@diamentexpert.com

Marta Kłosowska and the Diament Expert team will be happy to help you find the perfect diamond tailored to your individual needs.