Accredited Gemological Institute (AGI NY) is an independent diamond appraisal, gem appraisal & jewelry appraisal NYC service AGI NY appraisals are recognized by all major insurance companies. We provide the best possible information to our clients regarding their diamond, jewelry, gem stone & watch purchases. So before you buy, if you're unsure and want to know if you are not getting ripped off, stop by our office and let one of Graduate Gemologists assist you. When you visit AGI NY, you can expect to be treated with the respect you deserve. We explain the complete appraisal process in detail. You are present at all times and the appraisal is performed in front of you, while you watch.  Let Skilled Gemologists Perform Your Jewelry Appraisal | AGI NY  Are you shopping for a wedding ring or another piece of fine jewelry that you want to last the rest of your life Do you have a piece of antique jewelry that you need to have appraised to find out its worth Do you have a loose gemstone that you need appraised for sale or to put in a piece of jewelry You need the services of a qualified gemologist. When a gemstone is appraised, its value is determined by a rating of its clarity, its cut, its color, and its carats (size). These ratings are often called the four Cs, and one of a gemologist's jobs is to accurately rate each characteristic of a gem so that it can be appraised and sold at the right value. If a gem is highly clear with very little in the way of cloudiness or imperfections when looked at under a microscope, it will be rated higher. However, if its cut is poor and doesn't reflect light well, the poor rating on its cut will hurt its overall value.