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<body>"Balzan's Jewelry Laboratory has been serving the San Francisco Bay Area since 1983. Cortney Balzan was the first Master Gemologist Appraiser in Northern and Central California. Count on him and his staff to provide you with the experience and credentials you can trust. You can count on us for the following appraisal services: Identify gemstones as natural, treated, created or synthetic using industry standards. We can utilize advanced laboratory equipment for analysis in special cases. Electronically weigh colored gems or estimate them by formula. We can also remove gems from their mountings for actual weights upon request. Electronically weigh, measure and proportion grade loose diamonds using Sarin Technologies. We can also remove mounted diamonds from their mountings for a Sarin Technologies grading upon request. Utilize Diamond Sure to aid in the separation of natural, treated, and synthetic diamonds. Plot, clarity, color and proportion grade diamonds over 1/2 carat. Take photographs of gems and jewelry. We can also accept special photography requests for special reasons. Determine metal content, metal weights and total mounting weights in various measurements: carats, grams or pennyweights. Compare and explain major Gemological Grading Systems. Give valuation definitions along with the appropriate value and explanation of intended use for your purposes."</body>