#1 Diamond Buyer in Aventura, FL - Diamond Banc

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Aventura's #1 Diamond Buyer

Sell Your Diamonds With Confidence in Miami

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Xammany Vongratsamy, Market Director

Xammany Vongratsamy

Aventura, FL Market Director

phone 954-323-8475
alternate_email xammany@diamondbanc.com
schedule Book Appointment
Jan V.
I sold a Rolex watch. The transaction was handled professionally and in a timely manner and I got a fair market price.
Windy G.
Courteous, knowledgeable, efficient. Will use them again.
Angela E.
Jodi was awesome!
David Fernandez, Market Director

David Fernandez

Market Director

Coral Gables, FL

alternate_email david@diamondbanc.com

David is the Director of the Diamond Banc Miami with over 15 years of experience in the Fine Jewelry and Luxury Watches industry. His past work experience includes brands such as Cartier, A. Lange & Sohne, and Patek Philippe. David applies all his knowledge and expertise in securing the best values and lowest rates for his customers, and most importantly, to provide excellent customer service. David is also bilingual and can assist customers in both English and Spanish. Visit David in our Coral Gables Office!

Xammany Vongratsamy, Market Director

Xammany Vongratsamy

Market Director

Aventura, FL

phone 954-323-8475
alternate_email xammany@diamondbanc.com

With a career spanning more than 30 years, Xammany Vongratsamy is one of the most experienced luxury jewelry experts in the Florida area. She has worked for many of the world’s most prestigious brands, including Tiffany & Co., Patek Philippe, Cartier, Chopard, Chanel, Breguet, Harry Winston, Jaeger LeCoultre, and Girard Perregaux.

Xammany is known for her no-nonsense approach to evaluating your jewelry items—she knows exactly what she’s looking for and how to get you the highest possible offer. If you’re looking to sell your jewelry or secure an asset-based loan, Xammany has the expertise and experience to help you make the right decision.

“After watching countless videos on YouTube, I reached out to Diamond Banc and was introduced to Jordan. He made the process seamless and simple and answered all of my questions. The entire process, from initial contact to securing a loan took less than 48 hours.
I am very impressed with their process and level of customer service and highly recommend them to anyone needing to access their jewelry’s equity. Thank you again!”

-Sebastian C.

Get a Quote

In Person or Online

Schedule a private evaluation at your local Diamond Banc or use our online submission form.

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In-Person Evaluation

Complete In Person

Meet privately with a Diamond Banc director who’ll evaluate your items right in front of you & make you an offer.


Get Funded

Fast & Secure

If you accept our offer, we will issue payment immediately via check or wire transfer.


How does it work?

There are two ways you can sell your jewelry to Diamond Banc:

  1. Fill out our online submission form above & receive a quote within 24 hours from one of our expert jewelry buyers. Our team will provide you with a fully-insured shipping label to mail your item(s) to our headquarters. From the moment your jewelry arrives at our headquarters, it remains on continuous video surveillance until the package is opened and your items are verified. If you accept our offer, payment will be issued immediately via wire transfer. If you elect not to accept our offer, your item(s) are expedited back to you with a fully-insured shipping label.
  2. Visit a Diamond Banc office near you. If you are looking to receive an immediate offer & same-day funding, we encourage you to visit one of our offices nationwide. Schedule an appointment at a Diamond Banc location near you, have your jewelry evaluated on the spot, and get paid immediately. Typically, this process takes less than 40 minutes.

Find a Diamond Banc location near you.

How do you determine how much my jewelry is worth?

Diamond Banc takes several factors into consideration when making an offer to purchase diamonds, jewelry, and watches. When evaluating any diamond, we consider the 4 C’s (carat, cut, color, clarity) and its overall appearance and beauty.

We also take into account the current market demand for those characteristics. When putting together an offer for your jewelry, we take into account the maker of each piece, its date of production, condition, and quality of craftsmanship, style, and desirability.

Our vast network of over 20,000+ buyers & collectors ensures that we can make industry-leading offers for your items.

What if I don’t accept the final purchase offer?

If you elect not to accept our purchase offer, we will expedite your jewelry back to you under a fully-insured shipping label.

What types of jewelry do you accept?

Diamond Banc actively purchases diamonds 0.50ct+, engagement rings, diamond jewelry, estate jewelry, & signed designer jewelry from designers such as Cartier, Tiffany & Co., Harry Winston, Van Cleef & Arpels, Graff, and more.

Why should I sell my jewelry to Diamond Banc?

Diamond Banc offers the most expansive & pro-consumer jewelry liquidity options in the nation. Our sole focus is to provide our clients access to the liquidity their fine jewelry items possess. Thus, we are committed to paying industry-leading prices for your jewelry while offering you a simple, speedy, and professional transaction.

Check out our Google Reviews to see what clients’ of Diamond Banc are saying about their experience.

How do I get paid?

Once you accept our purchase offer, we issue payment via check or wire transfer immediately.

Can I get a loan instead?

Yes. Diamond Banc is the nation’s #1 jewelry-secured lender. With a Jewelry Equity Loan, you can borrow against the value of your jewelry while still retaining ownership of it. Learn more about our Jewelry Equity Loan service by watching this video or visiting our Jewelry Equity Loan page.

From The Founder

Why Choose Diamond Banc?

When it comes time to sell your diamond jewelry, there are many options to choose from. However, if you want to receive the highest value for your items and work with a trusted, experienced buyer, look no further than Diamond Banc of Aventura.

Diamond Banc is a nationally recognized buyer of high-end jewelry, including diamond engagement rings, diamond necklaces, diamond earrings, and diamond bracelets. Our team of experts is highly skilled in the evaluation of diamonds and the jewelry they are set in, ensuring that you receive the best possible offer for your pieces and every value-adding factor is taken into consideration before presenting you with an offer.

We believe that you should understand the value of your jewelry, and we are committed to providing you with a thorough evaluation and explanation of how we arrived at our offer. We take the time to educate our clients on the value-adding elements of their jewelry, including diamond quality, clarity, color, cut, and carat weight. In addition to our expertise in evaluating diamond jewelry, we are also committed to providing exceptional service to each and every client. Our team operates with the highest level of professionalism and confidentiality, ensuring that your transaction is handled with the utmost care. 

One of the key advantages of working with Diamond Banc is our nationwide network of buyers and sellers. Unlike many local Miami diamond buyers who are limited to their own market, we have curated buyers and selling avenues that seek different qualities, shapes, and sizes of diamond jewelry. This allows us to pay higher prices for diamonds of all carat weights, as we have a large pool of potential buyers who are looking for specific pieces. 

If you’re interested in selling your diamond jewelry, the first step is to schedule an appointment with Xammany, the Director of Diamond Banc in Aventura. We offer a zero-obligation evaluation, meaning that you can come in and receive a fair market value for your items without any commitment to sell.

The Best Diamond Buyer in Aventura & Beyond

At Diamond Banc of Aventura, we are committed to providing the best value for your diamonds, whether you’re looking to sell an engagement ring, loose diamonds, or other high-value diamond jewelry. With our proprietary pricing technology and extensive knowledge of the diamond market, we consistently provide unmatched offers to our clients. Our team operates with the highest level of professionalism and confidentiality, ensuring that your transaction is handled with care. As the preferred diamond buyer for the affluent in Aventura and Miami, we pride ourselves on our commitment to transparency and exceptional service.

Maximize the Value of Your Diamond with Diamond Banc of Aventura

Whether you want to “sell my diamond” engagement ring or other high-value diamond jewelry, our team of experts is skilled in evaluating all factors that contribute to your diamond’s value. We are equipped to handle major diamond purchases and guarantee the best possible buy price on the diamond you are considering selling. Trust Diamond Banc to provide you with exceptional service, unmatched offers, and a commitment to transparency and confidentiality. Contact us today to schedule an appointment with the top Miami diamond buyer.

Sell Your Diamond with Confidence 

We understand that determining the value of your diamond on the secondary market can be a complex process. Our team of experts takes a comprehensive approach to evaluate diamonds, taking into account a range of factors including carat weight, shape, color, and clarity. While a lab report from the Gemological Institute of America (GIA) can provide useful information, it is not a requirement for us to make an offer. Whether your diamond is certified or not, we will assess all of the value-adding elements of your diamond to provide you with an accurate market value. As one of the best diamond buyers in Miami, we are committed to providing our clients with exceptional service and top-dollar offers for their diamonds. So, if you are looking to sell your diamond, trust Diamond Banc to provide you with a fair and accurate evaluation.

We pride ourselves on being the best diamond buyer in Miami & nationwide. Our team of experts has years of experience in the diamond market and is equipped to provide you with a fair and competitive offer for your loose diamond, diamond engagement ring, or any other diamond jewelry item. We offer immediate payment upon accepting our offer, and unlike many local diamond buyers, we have a nationwide network of retailers, diamond dealers, and private collectors. This allows us to pay higher prices for diamonds of all carat weights and shapes, as we have a curated list of buyers and selling avenues that seek different qualities and sizes of diamonds. Whether your diamond is certified or not, our team of experts will thoroughly evaluate its value-adding elements and provide you with an accurate market value. Trust us to provide exceptional service and top value for your diamond, ensuring that you receive the most competitive offer available. If you’re looking to sell your diamond in Miami, Diamond Banc of Aventura is the smart choice.

The Expertise You Deserve

At Diamond Banc of Aventura, we prioritize transparency and ensuring that our clients receive the best value for their diamonds. Our team uses the largest dealer-to-dealer diamond trading platform in the world to determine the current market value of your diamond, and we will provide you with data to show how we arrived at our offer. We take the time to explain the factors involved in reselling your diamond and tailor our services to meet your specific needs. We offer a range of liquidity options, including an immediate cash purchase, consignment services, and VIP Seller’s Agent Service. With the VIP Seller’s Agent Service, we market your piece nationwide and advocate for top dollar with a transparent, fixed percentage commission charged. Our interests are aligned with yours, and we aim to provide you with the highest payout possible. As the best diamond buyer in Miami, we pride ourselves on offering exceptional service and expertise to our clients. 

The Best Place for a No-Obligation Jewelry Evaluation

If you’re interested in learning what your diamond is worth, you can contact Xammany directly by phone or email, or visit our office in Aventura. Our team is dedicated to providing you with the highest level of customer service, confidentiality, and professionalism. We are the top diamond buyer in Miami and are committed to helping our clients maximize the value of their diamonds. Contact Xammany today to get started on selling your diamond and to experience the Diamond Banc difference.

Areas Near Miami That We Serve:

West Island Blvd, Biscayne Blvd, Turnberry Way, City Center, East Island Blvd, Golden Beach, Point East Drive, Country Club Estates, Yacht Club, Aventura Central Island, Aventura Mall, North Island, Prive Island, South Island, Waterway Village, Marina Palms Yacht Club, Aventura Estates, Echo Condos, Mystic Point, The Reserve Aventura, & William’s Island.

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