Very easy experience working with Jack. He helped me with appraisal for a stone I bought online and was extremely courteous, professional, and thorough throughout the process. The price for the appraisal was also fantastic, would recommend him without hesitation read more

The best diamond appraiser lab in Los Angeles. Jack the owner is extremely nice and very accommodating. He is very knowledgeable about diamonds & precious stones, he explains to me the process and showed me everything that he see on my diamonds & explains it very well, from the clarity, cut, color and value. He is very honest and trustworthy. I am so happy that i finally found him after searching for a trusted diamond & gold appraiser. He is also a licensed GIA gemologist appraiser. I will definitely coming back and I do highly recommend him for your diamond jewelry appraisal with certificates. read more

We found Jack Naljian on Google. He appraised my jadeite bracelet and diamond ring. His explainations were clear and easy to understand. His knowledge of Gems is amazing. His is a man of high integrity and very easy to work with. I will take other pieces to him. read more

The owner, Jack appraised my diamond ring. He is very nice, knowledgeable and super professional. On top of that, the price was very friendly too. I highly recommend him if you need to check your jewelry. read more

We had called maybe 20 other estate & jewelry appraisal companies with no success. Each company either let us know that they we booked for the next several months, were out of business or just wouldn't deal with the items we needed appraised. We stumbled upon Jack Naljian on google, his website was professional and he had availability right away. At the appointment Jack & his son were very courteous, Jack took the time to explain everything he did & saw concerning our appraisal items. He gave us several options in terms of the type of appraisal we could & he confirmed carat weight, clarity, and color for each item. He confirmed that the diamonds we brought in were natural stones as opposed to synthetically created stones. Jack also immediately saw that one of our diamonds were laser treated. This was not something disclosed to us by the individual who sold us the diamond. So Jack's appraisal is priceless as we try to right a fraudulent sale. He was very knowledgeable & respectful. We were able to see each step of the process and he went above & beyond to ensure we had everything we needed. We are able to access our appraisals online and he provided a laminated hardcopy as well. We highly recommend his services. -Bri & Lisa read more

They were quick and informative. It was a great service - will definitely come back for any needs

I got 16 emeralds appraised in a short time window. Taking the elevator to top floor of building I knew this business was top notch. The presentation of their appraisal paperwork is extremely professional. The appraiser took his time with each piece and told me in detail what he thought of each stone when picked them up. Very trustworthy and honest! read more

I purchased a diamond tennis bracelet and wanted to confirm the carat weight, color, and clarity were truly what the retailer had sold me. Jack, the owner, is extremely responsive and amazing to deal with. I was able to get the appointment the same day. He confirmed that the diamonds were natural stones as opposed to lab made, confirmed the carat weight, the clarity, and the color and provided an appraisal for my insurance all within half an hour. He took a 360 image of the piece that I could access online at any time as well as provided a written appraisal report on site. Jack was very helpful and knowledgeable and made me feel comfortable that the piece I bought matches what the jeweler told me. read more

Great customer care! Jack was very knowledgeable and patient explaining what he had/going to do. He wanted to make sure I was comfortable handling my piece. He allowed me to be with him observing at all times. The future his website offer of certificate online it's super convenient. Also he is a GIA certified gemologist. Well recommended! read more

Same day appointment with very affordable price. I told him I was in a rush and he got me in and out without a problem. Excellent customer service and I will return in the near future. read more

Jack was very personable, friendly, and professional. I lost my engagement ring but a good Samaritan reported it so it came back to me 2 weeks later. They were the original appraiser so I went back to re-evaluate my ring to make sure nothing was changed. They showed the original photo enlarged on the big screen, plus an image of the ring under microscopes, and explained why he was sure it was the original diamond. He said he came up with the evaluation system and now it's used everywhere. No wonder he's good! FYI, Yelp doesn't have category for Jewelry appraisers. They don't do repairs just in case if you are wondering. :-) read more

I needed to get an appraisal for a ring. Jack was quick and thorough. I waited while he assessed it. He took time to explain to me the process and the outcome. He is friendly and knowledgeable! Glad I found him. I'll definitely use his services again. read more

Jack was very professional, knowledgeable and courteous. He clearly explained my options, and worked efficiently to appraise my rings. I would highly recommend his services to anyone needing a jewelry appraisal. Thank you, Jack! read more

Jack at Superior Gem Lab is an extremely professional and knowledgeable gemologist. He'll give you an accurate, honest appraisal and will answer any questions you might have to the fullest detail. read more

If you are looking for a certified gemologist I highly recommend Superior Gem Lab. Jack Naljian has been in the business for thirty years. He is knowledgeable, personable, and gives a detailed and professional appraisal. His fees are reasonable as well. The appraisals come in very professional documents. In addition, he developed a system of viewing the appraisals on line making it easy and secure for insurance companies. The parking is located right next door and he validates it for the entire length of the visit. I was there yesterday and will be back again with more items. Barbara H, Los Angeles August15, 2019 read more

Jack at Superior Gemological Laboratory is superb. He took the time to do detailed analyses of the pieces I brought, and told me which ones were worth having appraised and which ones were not. His appraisals are very high tech, including online multiple images and a 360 degree video of the piece. He is personable and professional, a pleasure to work with. read more

Jack was absolutely world class in doing our appraisals and is a straight forward business man. I was very apprehensive about find the right person to deal with our estate jewelry and he was excellent!! read more