Professional Estate & Fine Jewelry Appraisal Services in NYC
For more than 40 years, Louis Martin Jewelers has provided professional jewelry and estate appraisals from our Rockefeller Center showroom in New York City. Our GIA-certified gemologists evaluate diamonds, gemstones, and heirloom jewelry with the same care and precision we bring to every piece we sell.
What We Appraise
Wedding Rings & Bands
Designer & Fine Jewelry
Gemstone Jewelry
Estate Collections
Antique & Period Pieces
Precious Metal Jewelry
Why Choose Louis Martin Jewelers?
Experience You Can Trust
Our appraisers are well experience in the assessment of fine vintage jewelry and timepieces. With decades of experience, we offer accurate and precise appraisals.
Legacy of Excellence
We've worked hard to develop a strong recognition of quality in the last 40 years. Our lasting dedication to excellence will ensure you too will receive top-quality service.
Personalized Service
Here at Louis Martin, we understand how unique each piece of jewelry and watch are - and the stories of them. We take our time to listen to your specific needs and provide you a personalized appraisal.
Secure and Confidential
Security and confidentiality of our clients is top priority. Your personal information and data are stored securely with the highest level of privacy.
When to Get a Jewelry or Estate Appraisal
An accurate appraisal provides peace of mind and protection for your most valuable possessions.
Appraisals are commonly requested for:
- Insurance coverage and policy updates
- Estate settlement or probate
- Resale or consignment preparation
- Divorce or asset division
- Charitable donations
How the Process Works
1. Consultation – We begin by understanding your goals and explaining the type of appraisal that best fits your needs.
2. Inspection & Testing – Diamonds and gemstones are graded, metals are tested for purity, and craftsmanship is reviewed.
3. Market Analysis – We research comparable sales, current retail trends, and collector demand to establish fair value.
4. Documentation – You receive a written appraisal report with item descriptions, images, and value statements appropriate for your purpose.
Appraisal Documentation & Reports
Every report from Louis Martin Jewelers includes:
- Detailed material and craftsmanship description
- Diamond or gemstone grading by certified gemologists
- Precious metal verification and weight measurements
- High-resolution photographs of each item
- Assigned replacement or market value based on the intended purpose
Our Expertise
Generations of collectors and families have relied on Louis Martin Jewelers for fair, transparent appraisals. Our team includes GIA-trained gemologists and estate jewelry specialists skilled in diamond grading, gemstone identification, and metal testing.
From single heirloom rings to full estate collections, we evaluate jewelry across all design eras — Victorian, Edwardian, Art Deco, Retro, Mid-Century, and Modern. We also appraise signed pieces from celebrated houses such as Cartier, Tiffany & Co., and Van Cleef & Arpels.
Schedule an Appraisal
Whether you’re settling an estate, updating insurance, or preparing to sell, Louis Martin Jewelers provides professional jewelry appraisal services trusted throughout Manhattan.
Visit our Rockefeller Center showroom or contact us to schedule your private appointment.
For other valuation needs, explore our Watch Appraisals and Gold & Silver Appraisals.
Need Assistance?
Reach out to our friendly team at Louis Martin with any jewelry needs, any time.
A jewelry appraisal focuses on the replacement or market value of individual pieces, such as a diamond ring or gold bracelet. An estate appraisal evaluates multiple items together — often for inheritance, probate, or estate tax purposes — providing a collective valuation as well as per-item details when needed.
Our GIA-trained gemologists assess gemstone quality using the 4Cs — color, clarity, cut, and carat weight — along with craftsmanship, materials, and current market trends. This approach ensures that each piece is valued accurately and fairly.
Yes. While documentation is helpful, it isn’t required. Our specialists examine each piece directly to verify materials, authenticity, and value through professional testing and visual inspection.
Yes. All jewelry appraisals at Louis Martin Jewelers are performed by GIA-trained gemologists and estate jewelry specialists experienced in evaluating both antique and modern designs.
We carefully catalog, photograph, and appraise each piece individually, then compile a detailed report summarizing both individual item values and the total estate valuation for your records.
Absolutely. All client information and appraisal records are strictly confidential and released only with your written consent. Your privacy is always respected throughout the process.