What is AGI?

Accredited Gemological Institute (AGI NY) is an independent diamond and 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

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.

Different Types of Appraisals

When you get a jewelry appraisal from a gemologist at AGI NY, you can choose what type of report to get on your appraisal. Different appraisals are performed for different reasons. If your jewelry has been damaged, for example, you'll get a damage report. Here's a quick overview of some of the different reports you can get from AGI NY

  • Quality Confirmation – This analysis is done to determine that your gemstone is of the quality that your seller claims. It will also set the replacement value of the stone if you ever have to replace it due to loss, theft, or damage.
  • Liquidation Appraisal – This is done to determine what your gemstones would be worth if you were to liquidate them immediately for cash.
  • Antique or Vintage Appraisal – Have you been wondering what your great grandmother's antique diamond earrings are worth? Of course, they're priceless to you, but if you want to insure them, you'll need to have them appraised to find out their replacement cost.

Why Choose us

Accredited Gemological Institute is a privately owned independent institute of diamonds and gems which is located in New York. We arrogantly provide you with the best evaluation of your exquisite diamond, jewelry, gem stone or watch purchases up to the highest level of accuracy. We, at AGI NY, are renowned for the authentication of diamonds and provide a Diamond Certification of the diamond accessory in your possessions.


our advantages

  • We offer exceptional, personalized customer service
  • We are a Full-Service Laboratory
  • Competitive Pricing

Understanding AGI Jewelry Appraisal

Looking for a Jewelry Appraisal in NYC?

AGI New York is the best source for appraising jewelry in NYC. It is needless to say that buying jewelry is among the most expensive purchases youll ever make. This is why getting the jewelry appraised before you buy it is a smart decision as it can help you realize whether the item you are buying is really worth the price or not.

Our Commitment to Customer Satisfaction

We are highly dedicated towards customer satisfaction and reliability is one of our biggest assets. So if you are in NYC and looking for jewelry appraisal, theres only one source you need to consult and that is AGI New York!

Understanding AGI Diamond Appraisal

Your Number One Professional Diamond Appraising Service in NYC!

We have well versed GIA Graduates as our appraisers who are well trained to offer the most professional appraising services. So while consulting us for diamond appraisals, you can rest assured as each and every step of the diamond appraising process will be thorough and honest.

Honest, Reliable, and Highly Dependable Diamond Appraisers

We take great pride in the fact that we carry out all of our services with complete honesty. As such, it is safe to say that we are a highly reliable and dependable diamond appraising service.

Understanding AGI Diamond Certification

The Authentication of Your Diamond Accessories Is Essential!

It is necessary that you get your diamond accessories authenticated and certified. However, the most crucial aspect of diamond certification is honesty and integrity from the certifiers end and at AIG New York, we have plenty of that!

We Are a Renowned Source for Diamond Authentication in NYC

At AGI New York, we provide authentication as well as certification of the diamond accessories you own so you can rest assured that your prized possessions are completely authentic and certified. For our highly reliable and transparent services, we are well known throughout NYC as the best source for Diamond Authentication!

Our Staff

AGI's dedicated, professional appraisers are ready to help you with all your gem appraisal and diamond appraisal needs. As New York City's foremost authority on diamonds and gemstones, AGI's staff is dedicated to honesty and integrity. At AGI, our staff uses state-of-the-art technology to provide clients with the finest services available. AGI is among the leading appraiser gemological laboratories in New York City.

our Location

37 West 47th Street Suite 503
New York, NY 10036

Telephone: 212-302-3700