Diamond Education
Learn about 4C's and basics.
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BEYOND THE 4 C’S
After mastering the essentials of the 4 C’s (cut, carat, color, and clarity) of diamonds, it's time to explore more advanced aspects to enhance your selection process. At Steinhardt, our expert guides will help you navigate the detailed anatomy of diamonds, including polish, symmetry, fluorescence, girdle, culet, table, and depth. Understanding these intricate details allows you to maximize your budget and obtain the best value. Start your journey with diamond symmetry by clicking below and discover more.
Beyond The 4 C’s
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Fluorescence
Fluorescence in diamonds is evaluated based on their appearance under ultraviolet light. This phenomenon, caused by trace minerals present during the diamond's natural or lab-formed growth, results in a blue glow. Although fluorescence does not influence the diamond's look in daylight, it can affect its market value. Hence, it's important to carefully assess fluorescence, particularly concerning the diamond's color and clarity.
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Symmetry
Symmetry refers to the precise alignment and proportion of a diamond's facets. Diamonds with excellent symmetry often achieve high cut grades. This symmetry grade is detailed on the IGI or GIA certificate.
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Polish
Diamond polish refers to the smoothness and evenness of a diamond's facets. If the surfaces are rough, uneven, or show remnants of the original rough diamond, the quality is considered lower. Polish is a crucial factor that directly influences the diamond's cut grade. Typically, diamonds with an excellent cut grade also receive an excellent polish grade.
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Culet
The culet is the bottom part of the diamond and should be proportionate to the diamond's shape. It plays a crucial role in how light passes through the diamond, affecting its sparkle. If the culet is not properly proportioned, it can cause light leakage, diminishing the diamond's brilliance.
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Measurements
The measurements of a diamond play a crucial role in its sparkle and how effectively its facets display color and clarity. A well-proportioned diamond can appear more brilliant and visually appealing than a larger diamond with poor proportions. Proper proportions can also make the diamond look larger face-up, enhancing its overall beauty.
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Growth Type
The growth type of lab-grown diamonds shapes their quality and appearance. Methods like HPHT and CVD determine how atoms arrange during crystallization, affecting clarity and color consistency. Diamonds grown under controlled conditions often boast superior brilliance and size-to-weight ratios, offering visually appealing alternatives to natural diamonds.
Diamond Shape
FAQs
Yes, there are differences. Lab-grown diamonds are created in labs using processes like HPHT or CVD, making them more affordable and environmentally friendly compared to earth-mined diamonds, which form naturally over billions of years and are typically more expensive due to extensive mining. Despite these differences, both types are chemically and physically almost identical.
No, a diamond will not change color over time. Diamonds are highly stable and maintain their color permanently, whether they are natural or lab-grown. Proper care ensures they retain their brilliance and beauty indefinitely.
Both IGI (International Gemological Institute) and GIA (Gemological Institute of America) are reputable diamond grading organizations. GIA is often considered the gold standard due to its stringent grading standards and widespread recognition
To ensure the certification matches the stone, verify the unique laser inscription on the diamond's girdle, which corresponds to the certificate number. Additionally, match the diamond's characteristics, such as carat weight, cut, color, and clarity, with the details on the certificate. Many gemological labs also offer online verification services where you can enter the certificate number to confirm its authenticity.