Pearl Quality 101 – How GIA Examines and Classifies Pearls

If pearls are your gemstone of choice, you’ll want to learn more about GIA’s 7 Pearl Value Factors – the criteria GIA uses to classify and describe pearl quality.  Read on to learn about how pearl quality is determined and what you can do to find out how your pearls measure up.

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GIA Diamond Grading Reports: Understanding the Diamond Color Grade

If you’re shopping for diamonds and have done your 4Cs homework (color, clarity, cut, carat weight), then you already know that diamond color has a lot to do with overall diamond quality. The range of diamond color can be so subtle that your untrained eye may not be able to tell the difference between a nearly colorless diamond and a colorless one. But you’ll have no trouble in seeing the difference in diamond price. So how do you know exactly what you’re buying? That’s where an independent diamond grading report like GIA’s comes in. It provides a definitive, unbiased assessment of your diamond’s 4Cs, including its diamond color grade.

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Diamond Color Chart: The Official GIA Color Scale

As you’re shopping for diamonds, a diamond color chart comes in handy if you’re trying to understand the subtle color differences of D-to-Z diamonds. A simple online search for “diamond color chart” delivers a host of different graphics showing the relationship between diamond color and the respective color grade. The one thing nearly all these diamond charts have in common is that they’re derived from one standard – the GIA Color Scale.

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GIA Diamond Grading Reports: Understanding the Diamond Clarity Plotting Diagram

You probably already know about the importance of a diamond’s 4Cs (color, clarity, cut, carat weight) in defining diamond quality and ultimately determining its value. You may also know that a diamond grading report from an independent grading laboratory like GIA is your best way to be sure that your getting an unbiased assessment of your diamond’s quality. But in addition to the 4Cs, a diamond grading report also contains a wealth of information that tells a deeper story about your diamond.

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Gems and Ultrasonic Cleaners

If you love your jewelry, you’ll want it to always look as stunning as it did when it was new.

Ultrasonic cleaners can restore the beauty of your bejeweled treasures. These machines generate high-frequency sound waves that travel through water or a cleaning solution creating heat and pressure. Ultrasonic machines can effectively clean jewelry by dislodging dirt and debris from behind gems and other hard-to-reach places.

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Celebrating Richard T. Liddicoat – Architect of the GIA International Diamond Grading System™

March 2nd is a special day for us at GIA, jewelry aficionados, and those shopping for diamonds and diamond engagement rings: it’s the birthday of Richard T. Liddicoat (1918 – 2002) – the father of modern gemology, an inspiring teacher to thousands of jewelers, and a leader in the development of the GIA International Diamond Grading System™ and GIA diamond grading reports.

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