Yantz Bradbury Associates

Rockville, Maryland, USA

Avg. Rating Rating star5.0 (6 reviews)

Jewelry Expert - Sherlene Bradbury
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About this Appraiser

The appraiser who comes to you! Yantz Bradbury Associates is an independent jewelry and watch appraisal service headed by Sherlene Y. Bradbury, a GIA Graduate Gemologist-in-Residence (1982) and Certified Master Appraiser with the National Association of Jewelry Appraisers with retail and appraisal experience dating back to 1979. After acquiring sales experience in antique, estate and fine modern jewelry, she retired from retail and along with her husband and fellow Graduate Gemologist, Robbie Bradbury, they opened the appraisal service in 2003. Today, she brings an extensive background in insurance, estate, fair market and liquidation appraising and caters to private clients and exclusive, independent retailers in Maryland, DC, Virginia and Pennsylvania. She is also an expert witness and has the Global Investigative Services Background Check Cleared Badge.

Your Appraisal Appointment

For collections exceeding 11 items, she will come to your home or office bringing a full laboratory, printer, laptop and ultrasonic cleaner in order to provide you with a complete appraisal document, including photos. In most cases, the appraisal will be presented at the conclusion of the appointment.
For collections of 10 or fewer items, her office is conveniently located in Rockville, MD near major highways and the Metro. With few exceptions, you will leave with the appraisal documents.

All items will be checked for condition and cleaned, examined and tested as needed for identification, photographed, fully documented with measurements, estimated weights, quality and metal content noted. Any supporting laboratory reports will be verified and matched to your stones and if deemed accurate, will be recorded. Depending on the type of appraisal needed, current or secondary markets will be researched.

Other Jewelry & Diamond Appraisal Services

Sherlene does not buy or sell jewelry so her opinions are without bias and based on independent market research. She is available for pre-purchase consultations to better equip you when buying jewelry. While not advocating for any particular seller, she can educate you on how to shop ensuring that you get exactly what you want thereby mitigating buyer’s remorse. She is a speaker on various jewelry-related topics in the DC metro area.

Call Ms.Bradbury to discuss your individual needs and concerns so that she can best know how to serve you. YBAssociates looks forward to your call.


The Business

  • Private Practice & Trade Appraiser
  • Business mix: 100% appraisals
  • Principal + 0 staff Appraisers
  • Mon to Fri 11am to 5pm
  • Mobile lab & at Appraiser’s office


  • Per-item and time-based fees
  • Cards not accepted
  • Full appraisal reports start at: Withheld


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  • GG
  • CMA


  • GIA Alumni
  • NAJA


  • GIA - Member Recognition Award 1991

Background Checked

  • GIS


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mobile jewellery appraisals


Yantz Bradbury Associates

PO Box 10123
MD 20850

  • Limited access
  • Free, on-site
  • Visitors by appointment only
  • View large map


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Reviews (6)
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All reviews have been verified. The Jewellery Appraiser has confirmed the validity of the report details provided by the Reviewer but did not see the Reviewers rating or review text during the validation process. This produces unbiased, reliable and genuine reviews.


avatarJoycelyn. Rockville

Review starsJul 2020

Excellent Service

Sherlene provided excellent service. I would recommend her for your appraisal.

Expertise / Items Examined: Engagement ring.

avatarM.E. Roberts. Laytonsville

Review starsJun 2019

Excellent Services

I had the opportunity to meet Sherlene and Robbie Bradbury to appraise a pair of diamond earrings I inherited from mom in 1985. Sherlene was punctual, courteous, knowledgeable, and was kind enough to allow me to sit with her as she went through the appraisal process. What a treat! I would like to highly recommend Yantz Bradbury Associates for your jewelry appraisal needs. She gave me an excellent ‘Fair Market Appraisal’ that was accurate and fair. Thank you.

avatarJohn. Bethesda

Review starsJul 2018


Competent and fast appraiser with a pleasant demeanor.

avatarBeverly. Montgomery Village

Review starsDec 2017

Top-of-the-line Jewelry Appraiser

Needed to have five pieces of jewelry appraised for insurance replacement value (diamond rings, antique gold bracelets, necklace). Sherlene is a delightful and professional jewelry appraiser. She did the appraisals without any delays and it was a pleasure to observe her work. She appears to have the latest technical equipment...and the appraisal that I walked out with, was quite a document. Would highly recommend her without any hesitation whatsoever. If you need a thorough jewelry appraiser, you should contact Sherlene.

avatarJ Kamins. Silver Spring

Review starsOct 2017

Trusted Professional

It is my pleasure to publicly recommend YB Associates’ appraisal services. My family has had several opportunities to work with Sherlene Bradbury, the latest being an estate jewelry appraisal of 25 items. As always, Sherlene’s service was both cordial and professional. Her appraisal reports are well-documented, as you would expect, and instructional as well. Keenly sensitive to her clients’ concerns, she has recently taken the time to acquire an additional certification - the Background Check Cleared Badge. Without question, Sherlene is a trusted professional that our family can depend on for the highest quality appraisal services.

avatarLisa. Olney

Review starsJul 2017

Extremely Thorough Appraisal

I just wanted to thank Sherlene for taking the time to do such a thorough appraisal on my engagement ring, which was an old diamond that I received from my mother. I have had appraisals done in the past, however her technology was something that I had never seen before, and the experience was both informative and educational. I left with pictures that will distinguish my diamond with it's markings, as well as all the information about the diamond for myself and the insurance company. I will refer my friends and relatives to Sherlene in the future.