Providing Objective Valuation Services For Diamonds, Gemstones, Pearls, Watches, Contemporary and Estate Jewelry
Independence, Impartiality, Objectivity
At La Jolla Gem Appraisal, the appraised items are examined, identified and graded by a GIA Graduate Gemologist. We apply the GIA Diamond, Colored Stone and Pearl Grading System to our grading procedure.
The appraisal report will be rendered in accordance with the following:
- The current version Uniform Standards of Professional Appraisal Practice (USPAP) of The Appraisal Foundation.
- The Principles of Appraisal Practice and Code of Ethics of The American Society of Appraisers (ASA).


We Are Proud To Be The 56th Certified Gem Lab By AGA In The World
By acquiring the AGA Certified Gemological Laboratory (CGL) status - AGA CGL #56, we are joining some of the world's leading gemological labs that believe in excellence and are dedicated to establishing the highest ethical and professional standards of practice.
State-of-the-art Gem Laboratory
Our laboratory is well-equipped with high standard gemological instruments as well as advanced technology to provide accurate, reliable results of our appraisal reports.
We are one of a few laboratories that have the EXA spectrometer to accurately analyze and distinguish natural diamonds from HPHT/ CVD synthetic diamonds and diamond simulants.

La Jolla Gem Appraisal applies advanced technology to identify natural versus synthetic diamond →
In the trade, it is essential that laboratory-grown diamonds can be identified because consumers need to know what they are buying, and because there are often significant price differences between...
Fracture-filling in diamonds: a treatment to enhance diamond clarity but it needs to be disclosed to the consumers →
What is fracture-filled diamond? There are many diamonds (both loose and mounted stones) that come across my desk on a daily basis for inspection as a part of the appraisal...
How To Date Diamonds? →
Diamond in kimberlite. Photo courtesy of Geology For Investors Scientists estimate that the earth is about 4.6 billion years old. According to GIA, research published in 2010 indicates that the...
La Jolla Gem Appraisal
800 Silverado St., Suite 300 (3rd Floor)
La Jolla, CA 92037
Mon - Fri, 9am - 5pm
Saturday, 9am - 4pm