Business Details
8 Years
experience
Luxury Pre-Owned Jewelry & Engagement Rings in New York City
Based in New York City's Diamond District, The Diamond Oak specializes in luxury fine jewelry with a heritage rooted in diamond expertise since 1951. Our family-owned business combines generations of industry knowledge with a commitment to quality, offering meticulously authenticated and restored pre-owned pieces from iconic brands like Tiffany & Co., Cartier, and Bulgari. We prioritize transparency and client relationships, providing value through extensive inventory and expert craftsmanship.Our custom jewelry services and consignment options cater to diverse client needs while maintaining rigorous standards of authenticity. With a global perspective gained through international experience, we facilitate meaningful connections through jewelry that celebrates life's milestones with enduring significance.
Services
Pre-Owned Jewelry Sales
Authentication Services
Jewelry Restoration
Custom Design
Consignment Program
Details
- Year established: 2018
Highlights and features
- 30-50% below retail pricing on all inventory
- 70+ years combined family expertise in diamond trade
- Free fully insured overnight shipping for sellers
- Transparent process with no obligation to sell
- Expert authentication and restoration specialists
What people say
Best price offered
Seamless process
Timely responses
Professional handling
Secure shipping
Services
Pre-Owned Jewelry Sales
We offer an extensive collection of authenticated pre-owned luxury jewelry from iconic brands like Tiffany & Co., Cartier, and Bulgari. Our inventory includes vintage pieces, estate jewelry, and contemporary designs that have been meticulously restored to like-new condition. Each item undergoes rigorous authentication and quality checks to ensure complete confidence in every purchase.
Authentication Services
Our expert team provides comprehensive authentication for luxury jewelry pieces using industry-leading techniques and decades of accumulated expertise. We verify provenance, material composition, and craftsmanship authenticity for both branded and non-branded items. This service includes detailed documentation and certification to ensure complete transparency for buyers and sellers.
Jewelry Restoration
Our specialists perform meticulous restoration work to return pre-owned jewelry to flawless condition while preserving original design integrity. Services include cleaning, polishing, stone tightening, and structural repairs using traditional techniques. Every restored piece meets our exacting standards for presentation and durability while maintaining its historical character.
Custom Design
We create custom-designed jewelry pieces tailored to individual specifications using premium materials and master craftsmanship. Our design process incorporates client preferences for metal types, stone selection, and stylistic elements. Each custom creation combines technical precision with artistic vision to produce unique, heirloom-quality jewelry pieces.
Consignment Program
Our consignment service offers competitive market pricing and professional presentation for clients seeking to sell luxury jewelry. We provide two pricing options - outright purchase or consignment sale - with expert marketing and valuation support. The program includes secure handling, professional photography, and access to our established buyer network.
People
Alon Mors
Founder
Third-generation diamond expert with 25+ years in the jewelry industry, combining family legacy from Israel's diamond sector with NYC Diamond District expertise. Specializes in authentication and custom design.
Questions
What brands of jewelry do you accept for consignment?
We specialize in luxury brands including Tiffany & Co., Cartier, Bulgari, Van Cleef & Arpels, and Harry Winston, along with select non-branded pieces with certified diamonds.
How quickly will I receive payment after selling jewelry?
Most sellers receive payment within 2-3 business days after shipment arrival, with options for same-day check processing or electronic transfers.
Do you require original documentation for jewelry authentication?
While certificates enhance value verification, we can authenticate most branded pieces without original paperwork using our expert evaluation methods.
What shipping options do you provide for sellers?
We provide fully insured FedEx Overnight shipping labels at no cost, with signature confirmation and tracking for complete security.
Can I sell non-branded jewelry through your platform?
Yes, we accept non-branded pieces with GIA-certified diamonds and evaluate them based on material quality, craftsmanship, and market demand.
What is your minimum transaction amount?
We require a $500 minimum transaction value, though multiple smaller items can be combined to meet this threshold for selling or consignment.
Reviews (4)
K. A.
Jan 18, 2022
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Wendy and her staff went out of their way to help me choose a beautiful Tiffany diamond engagement ring. I am from out of state and utilized their user/shopper friendly web-site to look through their large inventory of rings. After finding a few rings I was interested in, I just reached via phone and spoke with Wendy and she immediately started helping me and offering me great advice and information.
Wendy and her staff were extremely efficient and helpful throughout the buying process and then through the delivery process. There was great communication as well. My entire experience with The
Wendy and her staff were extremely efficient and helpful throughout the buying process and then through the delivery process. There was great communication as well. My entire experience with The
Sel
Jan 16, 2022
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When they give you a guaranteed price, beware, as that does NOT mean they are going to buy it. They ask for pictures and documentation, they do their own research and then, give you a GUARANTEED quote. Then they renig if they want, after they see it, even if it is exactly as the pictures show. Wasted days and turned down other offers. The guarantee is meaningless You are much better off not selling to them
Elias Massih
Jan 09, 2022
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Communication was first class delivery and tracking was exceptional
I noticed that it was only a matter of a few hrs after I had paid for my item that fed x had picked it up
I over paid accidentally and without hesitation my over paid amount was reimbursed to me straight away over all a great place to do business with and I will certainly refer friends and family
Oh and I am buying from Australia so it makes this experience all the more satisfying being they are in nyc
Thanking you all and may god bless you
I noticed that it was only a matter of a few hrs after I had paid for my item that fed x had picked it up
I over paid accidentally and without hesitation my over paid amount was reimbursed to me straight away over all a great place to do business with and I will certainly refer friends and family
Oh and I am buying from Australia so it makes this experience all the more satisfying being they are in nyc
Thanking you all and may god bless you
Alasaurus M.
Nov 29, 2021
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Incredible, personalized and professional service! I quickly came to a very fair deal to sell my earrings. They mailed the check FEDEX and it arrived fast. I very much appreciate Alon and Wendy's awesome customer care. This company is simply the best place to sell jewelry. Absolutely fantastic experience!
