About Us

GemPro Lab is an independent gemologist laboratory that provides a range of gemstone testing and grading services to jewelry industry professionals, gemstone dealers, and private collectors.

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GemPro Lab

Welcome to GemPro Lab, a leading independent gemology and jewelry appraisal lab. Our team of expert gemologists and appraisers are committed to providing accurate and unbiased assessments of the quality and value of your gemstones and jewelry.

With years of experience in the industry, we have built a reputation for excellence in gemology and appraisal services. We use the latest technology and advanced techniques to evaluate and analyze gemstones and jewelry, ensuring that our clients receive the most accurate and reliable assessments possible.

At GemPro Lab, we offer a wide range of services, including gemstone identification, jewelry appraisals, estate appraisals, insurance appraisals, diamond grading, and more. We also provide ligation support services, helping clients with legal disputes involving gemstones and jewelry.

We understand the importance of trust and transparency in our industry, which is why we take pride in providing our clients with clear and detailed reports, as well as open and honest communication throughout the appraisal process. Our goal is to ensure that our clients feel confident and informed about the quality and value of their gemstones and jewelry.

Whether you are looking to buy or sell gemstones or jewelry, or simply need an appraisal for insurance or estate planning purposes, GemPro Lab is here to help. Contact us today to learn more about our services and how we can assist you with your gemology and appraisal needs.

Lead Gemologists/Founder

Candace Banks

Candace Banks

Lead Gemologist/Founder

Meet Candace Banks, the founder and lead gemologist at GemPro Lab, an independent gemological and jewelry appraisal company located in California. Candace brings years of experience and expertise in the field of gemology to her work at GemPro Lab, ensuring that clients receive the most accurate and reliable assessments possible.

Candace’s passion for gemology began at a young age, sparked by her fascination with the beauty and uniqueness of gemstones. After obtaining her degree in gemology, she went on to gain valuable experience working for some of the most prestigious jewelry companies in the industry, honing her skills in the areas of gemstone identification, grading, and appraisals.

In 2003, Candace founded GemPro Lab with a vision to provide independent and unbiased gemological and appraisal services to clients in the California area. Her commitment to quality and accuracy has earned her a reputation as a leading expert in the field, and she has since built a team of highly skilled gemologists and appraisers to support her work at GemPro Lab.

Candace’s expertise extends to all areas of gemology and jewelry appraisal, including diamond grading, estate appraisals, insurance appraisals, and ligation support services. Her attention to detail and dedication to providing exceptional customer service has helped GemPro Lab become a trusted name in the industry.

Beyond her work at GemPro Lab, Candace is also an active member of several professional organizations, including the Gemological Institute of America and the National Association of Jewelry Appraisers. She is committed to staying up-to-date with the latest developments in the field of gemology, ensuring that her clients receive the most current and accurate information possible.

If you are in need of expert gemological or appraisal services, Candace Banks and the team at GemPro Lab are here to help. Contact us today to learn more about our services and how we can assist you with your gemology and appraisal needs.


  • Gemological Institute of America (GIA) – Graduate Gemologist (GG), 2005
  • American Gem Society (AGS) – Certified Gemologist Appraiser (CGA), 2002
  • National Association of Jewelry Appraisers (NAJA)
  • Jewelry Appraisers of the World JAW
  • Women’s Jewelry Association (WJA)