Gemology Services
Rooted in Clarity,
Expertise and Integrity
STL Gems offers independent appraisals, gemological testing, and expert guidance for individuals, estates and industry professionals.
Gemology Services
Rooted in Clarity,
Expertise and Integrity
STL Gems offers independent appraisals, gemological testing, and expert guidance for individuals, estates and industry professionals.
Your Trusted Gemology Partner
STL Gems provides expert-driven services across the full spectrum of gemology—delivering trusted appraisals, precise testing, and tailored consulting to clients. With a commitment to transparency and excellence, we bring clarity and value to every project.
Your Trusted Gemology Partner
STL Gems provides expert-driven services across the full spectrum of gemology—delivering trusted appraisals, precise testing, and tailored consulting to clients. With a commitment to transparency and excellence, we bring clarity and value to every project.
A Full Spectrum of Concierge Services
A Full Spectrum of Concierge Services
Whether you’re preserving an heirloom, sourcing a rare gemstone, settling an estate, or advising clients in a professional capacity, STL Gems offers integrated services designed to meet the moment.
CERTIFIED APPRAISAL SERVICES
Insurance, estate, legal, and fair market valuations
gemological testing
Identification, grading, treatment detection, origin analysis
Custom Design & Restoration
Jewelry modifications, heirloom repurposing
Consulting & Advisory
Estate planning, pre-purchase guidance, collector support
B2b SERVICES
Support for jewelers, designers, and industry professionals
Jewelry & Gemstone Sales
Gemstones, Curated estate jewelry, and acquisitions
Credentials you can count on
Graduate Gemologist
Awarded by the Gemological Institute of America, Resident Program 2013 at GIA World Headquarters
Accredited Senior Gemologist
Awarded by the Accredited Gemologist Association
USPAP-Compliant Appraisals
Contributor, International Gem Society
Jake is an outstanding guy. He has a passion for gemology that is evident. Having a conversation with The Concierge Gemologist is a worth while stop on your journey to understanding and valuing your own precious gemstones and jewelry.
Jonah Lieberman
Jacob is a very knowledgeable and trustworthy gem specialist. He helped me assess and sell pieces of my jewelry collection. I appreciated his concierge service of meeting at my home too! Highly recommend.
Victoria Singer
Jacob helped me with looking through family pieces and suggesting new uses for them. I love the necklace he had made for me. But my favorite piece is the ring he had made with the birthstones of my daughters and grandchildren. I wear it every day. Jacob is knowledgeable and creative, and I thoroughly enjoyed working with him.
Sally Altman
Jake was wonderful, helping us with a few jewelry items and watches. I found him to be honest and transparent with the pieces we were evaluating for estate and insurance purposes. His service was top-notch, coming to our home for the services. I would highly recommend Jake at The Concierge Gemologist for any independent appraisal needs.
Gene Toombs
Jake is an experienced jeweler and very professional. He repaired an antique necklace and did a beautiful job. I highly recommend him.
Flo CK
I have bought many custom made pieces from Jake. The quality of his jewels, design expertise, and his ability and desire to steer his clients to the right jewelry for their needs makes him a superb person to work with. I highly recommend him to anyone who wants a jeweler who is a wonderful craftsman and to know that you are getting the finest quality product for a reasonable price.
Toby Epstein
Jacob came to the house, which was a good idea for me. I felt much more comfortable and safe. He is very knowledgeable and was able to help me to make some decisions concerning my jewelry. Jacob spent more than an appropriate amount of time in helping me decide what to keep and what to get rid of. He was able to sell two pieces for me. Overall I’m very happy.
Elizabeth Sayre
Working with Jake has been a great experience. He provided a caring, attentive, and personalized experience in helping to design my wedding band.
Justin Hampton
I would 100% recommend The Concierge Gemologist for all my jewelry needs. Jake is incredibly knowledgeable, and his presentation of the items he appraised was outstanding. I personally have never worked with anyone with such high standards and ability. I will continue to use Jake for ALL my appraisal needs. Sincerely, Thank you, Jake!
Cheryl Berry-Levison