Ive gone through Diamond Source twice now for rings for my wife and Ive been extremely satisfied both times. Ron is fantastic to work with, very knowledgeable when it came to any questions I had, and was timely in his turnaround times. On top of all this the prices are very competitive and the quality cant be beat. Would highly recommend to anyone shopping for a diamond!

I was referred to Ron by my brother-in-law. He used #1 Diamond Source for my sisters ring and it turned out great. I couldnt be happier with how helpful they were or how reasonably priced they are. Most importantly I am absolutely thrilled with the ring they made for me! I was pretty specific with how I wanted everything done; from the cut, to the setting and even the design. Ron turned my vision into an amazingly beautiful ring! I live in Indiana and his methods of contact and shipping worked out flawlessly. My fiancé loves her ring and I would 100% recommend #1 Diamond Source to anyone interested in looking for an engagement ring!

I worked with Ron to design my wedding band after my husband got my engagement ring from Ron. Ron was patient, helpful and most importantly, genuine and trustworthy. The turnaround time was also extremely fast and the wedding band came out exactly as I wanted. Ron kept me well informed of status at all times and was always timely with returning my calls and emails. Working with Ron was a pleasure and I will certainly be using him again for my precious stone & fine jewelry needs.

I couldnt have imagined a more beautiful ring. Ron and Lois helped my fiance Michael find the most beautiful diamond that was absolutely perfect for me. The quality of the diamond is not one you will find going to a jewelry store, its the best of the best. I was concerned about the ring being to big and the were able to help adjust the size within less then a day. They are extremely responsive and I would recommend Diamond Source to anyone looking for a quality diamond ring to last a lifetime. Thank you Diamond Source for such a wonderful experience.

Ron and Lois are the best! I researched buying a 30th wedding anniversary diamond ring for months. I considered rings in both Tiffanys and Cartier, but I knew that I would pay a premium for a conflict free, good quality diamond. Then, I stumbled on #1 Diamond Source because of their BBB rating which is very good. I was very nervous about purchasing a diamond in the diamond district but Ron and Lois were knowledgeable, trustworthy and personable. They made the experience wonderful and I have a beautiful ring that was made with care and quality. I will definitely use them again .

We had an excellent experience with Ron at #1 Diamond Source. My fiancé got my engagement ring from him, and was able to get me the ring I wanted with such great quality. I get so many compliments! Ron worked with us to get me the matching design I wanted for the wedding band at a fair and reasonable price. It is difficult to find people who are fair and honest in this industry so we were happy to do business with Ron and look forward to working with him again in the future!

Update: We have been working with Ron for over 5 years and he is always a pleasure to work with. A+++++++++++!Ron and Lois are a pleasure deal with. Excellent quality, selection, and fair prices! Ron has the ability to make any ring/setting you want. Highly recommended!

You get wholesale diamonds with amazing service by GIA Gemologist with 30 years+ experience with loose diamonds and Diamond jewelry.

Ron was extremely professional and honest. He really works within your budget and works with you to get the best quality ring. The ring turned out beautiful, recommending to all my friends.

I just received my custom made diamond heart pendant. It is so gorgeous, such sparkling diamonds that I am beyond thrilled! It is always a pleasure to do business with Ron and Lois - through the years my family and I have purchased engagement rings, gemstones and a lovely diamond ring that I will cherish always. Ron and Lois are always wonderful to work with!

They make what you imagine a reality! I was referred to Ron when I was shopping for an engagement ring for my girlfriend(now wife). I had a specific ring that I wanted in mind, and Ron was able to duplicate my vision to a tee! I couldnt have been happier with the quality, price, and service. Rons easy going, no pressure demeanor made the whole engagement ring buying experience enjoyable. My wife and I have already returned on multiple occasions for our other jewelry/diamond needs. Thank you and keep up the good work!

I enthusiastically recommend #1 Diamond Source. I worked with Ron and Lois to create a unique custom pendant featuring a rough diamond. Their communication was superb, and the quality of the finished product was magnificent. The cost of the project was within the initial estimate provided by Ron.

Hands down the most professional and helpful couple I have ever met! Ron and Lois were extremely knowledgeable about every aspect of the diamond selection, from the cut to the clarity, and assisted me in selecting the perfect diamond, while making the whole experience painless and enjoyable. The added benefit was the custom band that they created to support the diamond, which was everything that my fiancé wanted and more. The ring is spectacular and I would recommend them to anyone who is looking to build a custom engagement ring!

So great working with Ron and Lois. I purchased a 2 carat diamond ring for my wife. I explained what I was looking for and they got right on it. Quality, price, and delivery was superb. Ive never been more pleased dealing with a jeweler.

Ron and Lois were great to work with. They made the otherwise intimidating task of purchasing a diamond a breeze. I came into the process not knowing anything about gems and Ron took the time to honestly explain everything I was getting and the pros/cons of each. The knowledge/service/honesty/value is second to none - I wouldnt consider using another jeweler.

I purchased my wedding band through #1 Diamond Source, and had an incredible experience! Ron was wonderful to work with, he responded to all my questions in a timely fashion. I will do business with this company again. Thank you for the beautiful diamonds!

Ron and Lois are both very nice and they do a great job in anything that you buy from them. I got my engagement ring and wedding band from 1diamond source. They are very responsible when it comes to their job. The diamond quality is AMAZING and SO pretty.

Ron is GREAT! Was referred by a friend who lived oversees so I decided to use him w/o even meeting him being that I am in Michigan. Bought my wifes engagement ring 11 years ago and she LOVED it! Had him make a wedding band as well. She gets compliments all the time regarding the set. I contacted him a few months back for an updated appraisal and he was very responsive. Will get my wife diamond earrings for our 15th anniversary from him.

Ron and Lois take the personal attention so important to the jewelry buying process to a new level of excellence. Their craftsmanship is second to none, as well. If you can dream it, they can make it.

My experience with Ron and Lois was fantastic! They came highly recommended and did not disappoint. My now fiance absolutely loves her ring! I couldnt have been happier with this purchase. Thanks again for all of your help!

These guys did a great job of recutting my badly damaged diamond. They are very honest and provide great customer service. Im a professional gem cutter and couldnt be more pleased with the work they did or their top notch customer service.

My family and I have ordered several beautiful pieces from Diamond Source. Everything has far exceeded our expectations. Lois and Ron are a pleasure to work with. Do not hesitate to place an order with them!

Working with Ron & Lois was nothing short of a pleasure. While I went back and forth on what I wanted, Ron worked with me with extreme patience and then delivered exactly what I was looking for. I sent him a design I wanted replicated and he knocked it out of the park.Ron & Lois you definitely have a lifelong customer in me, thanks for everything.Dwayne

Ron is the best! Trustworthy, caring to his customers, and he produces what he commits to. Forget Tiffany, and try out #1 Diamond Source, you will not regret it, I PROMISE!!!Thanks Ron!

After 8 months of searching for the Perfect Diamond for the engagement ring I bought my wife, I found Ron and #1 Diamond Source. I cant even to begin to tell you of all the scammers and slick talkers and bs artists that sell jewelry from my experiences. Or I would have to over pay for a diamond from a reputable chain.Once I found Ron online, I saw he had what I was looking for with unbeatable prices for GIA certified Diamonds. We scheduled an appointment and I was welcomed so kindly and warm and felt at ease with no pressure to make a purchase but I knew I found the right place with the right guy. Honest and fair, also respectable. I feel bad because I bought my diamond over two years ago and Im just writing this now. But the Diamond worked. Im still married and now have a daughter. It all started with a Diamond....

The Highest Praise from 2 Thrilled CustomersMy wife and I recently had the pleasure of purchasing a diamond from #1 Diamond Source. We were extremely impressed by the huge selection of diamonds and the incredible customer service. Ron and his wife Lois are clearly professionals with a great knowledge of gems and a desire to make customers feel at ease with their purchase.My wife and I are very picky customer and had spent countless hours shopping and researching diamond vendors before hand. Since we live a fair distance from NY, most of our dealings were done by phone and e-mail and fortunately this was no problem at all as Ron always answered promptly and helped guide and narrow our search. Ron really took the time to understand what we were looking for (cut, carat, size dimensions, clarity, budget…) and he did an incredible job finding great gems that fit our taste. Not only did he show us the various stones we asked to see from his website but he also added several more on his own and all of them fit perfectly within the budget and criteria we had set. In truth his choices were far better than ours.We never felt pressured and were reassured by Ron’s 30 day exchange/refund policy. Unlike our experiences with the stores on 47th and 48th St. we truly felt at ease with Ron and had faith in the quality and price of what he was showing us. It was an extremely difficult choice because he provided so many beautiful options but Ron patiently helped us without being in the slightest bit pushy. Several of the diamonds were virtually perfect for us and the one we eventually purchased and took home absolutely delights us!Neither of us dreamed we would get such a beautiful diamond for such a great price. We are extremely happy with our purchase and loved dealing with Ron. We would highly recommend #1 Diamond Source.SincerelyMarc and Lorraine

I went to RDT International (#1 Diamond Source) due to a referral from a close friend who got both his engagement ring and wedding band from Ron. The service Ron and his wife provided as well as the finished product was nothing short of outstanding.The characteristic that stood out the most was that Ron was not a pushy jewelry salesmen (like you will see everywhere else on 47th street). Ron is more understanding of what his customer wants, describes all aspects and processes in fine detail (rather than a minimal word response such as Yes its good quality like the other jewelers in the area), as well as fully answer any question you may have.The thing I liked most was that once I picked out my stone, Ron told me my selection was not final just yet. He wanted to run that stone by his wife who is GIA certified for her approval. Only after her approval, he would sell it to me. This tells me they care about the products they are selling and want to make sure its the finest selection their customers have chosen.I will 100% go back to Ron to get my wedding bands as well as any other jewelry needs.Milan

I made an exhaustive and time consuming search for a diamond to replace my wifes stone which had been damaged. I was frankly discouraged by several of the diamond dealers I contacted who wasted my time or seemingly bordered on unethical. Then I found Ron and Lois at #1 Diamond Source who sold me a beautiful stone which was almost exactly like what I was looking for. Whenever I have a need for diamonds or jewelry in the future, this is the first and probably the last place I will shop