Why We Are Different

Gemological Science International has re-engineered the processing paths for gem identification and grading. Our unique methods have made our process incredibly efficient while maintaining the accuracy and integrity of our results, allowing us to offer a world-class product at an affordable price.

GSI’s Vision

We believe that all diamond buyers deserve the peace of mind afforded by a reliable grading report. That’s why GSI strives to deliver results you can trust at a price you can afford.

  • To ensure the safety of its customers’ gemstones as well as its staff, GSI’s reception area is equipped with state-of-the art security.

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  • Our system prioritizes organization and procedure to ensure that your diamond gets an accurate and reliable grade in a timely fashion.

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  • Diamonds are weighed according to the international standard–to a thousandth of a carat. The weight recorded is rounded to a hundredth of a carat.

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  • Using top-of-the-line magnifying equipment, our experts quickly and accurately grade a diamond’s clarity according to the internationally-accepted GIA clarity scale. 

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  • This is one area in which our people remain our most valuable asset. Our gemologists determine a diamond’s color grade by using comparison stones from a master color set.

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  • Our process looks for for “fluorescence,” the property that describes how a diamond behaves when placed under UV light.

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  • One of the biggest challenges faced by the diamond industry today is identifying when a diamond has been treated or artificially produced.

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  • We use the latest technology to deliver accurate and thorough results. Our Sarine machine renders highly accurate 3-D models from a series of 2-D images.

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  • GSI uses state-of-the-art OGI Technologies gemstone laser inscription systems  for all its gemstone inscriptionDiamonds are guaranteed not to crack or fracture based on this exclusive cold laser technology. 

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  • GSI offers multiple types of comprehensive grading reports detailing the results of our process. Each grading report comes with supplemental educational materials to help you understand the unique characteristics of your diamonds. 

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  • We strive to provide every customer with attentive and personal care. The GSI customer experience is unparalleled in the field.

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