I wanted a two-tone setting for a pear shaped diamond ring. I was so happy with my first purchase from Kurt, a 3 stone diamond ring, I wanted to see if he could make this happen. Fortunately, I was able to go to Kurt's showroom and luckily for me he had the setting/band I wanted and the pear shaped diamond that was perfect for the setting. So a week later I picked it up. WOW!!! The ring is absolutely STUNNING! So happy I went to see him at his showroom! My first purchase was from Kurt's Etsy store, KurtUngDesign, where I purchased his 3 diamond ring, as mentioned. It's absolutely a one-of-a-kind with all 3 diamonds in equal size and 8 prong settings... they look like beautiful blooms! If you're looking for a special ring/jewelry, I highly encourage you to work with Kurt. He is courteous, professional, provides amazing customer service/communication and very competitive pricing. You will get more for your money! Thank you again, Kurt! read more

See all

Kurt has been my jeweler for over 30 years! I recently went to see him in May to get my stone set lower in an eternity band. Since it was a custom order, he said it would take about three weeks. It was ready a few days early. When my daughter and I went to pick it up, it was absolutely stunning! Kurt even added three small diamonds on each side (12 total) for an added special touch to my setting. I will never go anywhere else! He always provides excellent customer service and does amazing work! read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

See all

This review is overdue. I purchased both a pear shaped lab diamond pendant as well as a princess cut diamond ring from Kurt and had a great experience. Responsible, professional, punctual with fair prices. Highly recommended! read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

See all

Excited to announce we've officially found our family jeweler! I came to visit Kurt on a Wednesday at 1 PM and he already had a line 3 people deep & it doesn't take long to learn why. I got a fantastic price on these sparklers, service was prompt, Kurt was great and all their items were QUALITY. I can't wait to come back! TY, Kurt and fam! read more

See all

Kurt is the best. I've been doing business with him for the last 35 years and he's never disappointed although he doesn't do custom settings anymore. He still has good inventory beautiful diamonds and is honest. Independent bowl. read more

Excellent jewelery and very helpful with re-designing some of my pieces. Reasonable pricing for the quality!

I highly recommend Kurt! His booth is located inside Fullerton Jewelry Mart right by one of the entrances. The place has plenty of parking and the location feels safe. He's honest, has fair pricing, and great craftsmanship. His pleasant personality makes for a great shopping experience as well. He's knowledgeable and will give you his opinion if you're undecided. Kurt will also work with you to custom design jewelry that he doesn't have on hand. read more

I've been going to Kurt Ung for nearly 30 years. Truly has the best quality and prices of all the jewelry stores I've been into . Especially at Fullerton Jewelry Mart. Honest as they come and you will definitely get you money's worth. Selection is outstanding and up to date pieces. Thank you, Kurt for all the great pieces read more

Kurt is my SAVIOR. Came here to get a simple engagement ring with my husband, I wanted something small but pretty. We bought a beautiful rose gold, pear shape morganite ring with his tungsten wedding band for $500 total. I get so many compliments on my ring. Six months later, my ring has an accident down the disposal - RUINED. I thought it would be unfixable. Because Fullerton is far from me, I got a quote at my local mall that said my ring would not be worth fixing and to just buy another one. I cried of course, but figured we'd try with Kurt or look for another. Kurt looked at my ring and said he could fix it. $90 and it looks NEW! My husband and I are in shock but ultimately just grateful he saved my ring. Best Jeweler hands down. Thank you Kurt!!!!! read more

See all

I've been going to this jewelry store for over 25 years..very honest and top quality. Prices are good and fair.

3/28/23 First time at UBS/Kurt, found necklaces online, wanted to see in person. He's in Fullerton Jewelry Mart Literally his booth was busiest! People were willing to wait. A lady showed up who seemed like a long time customer, she brought male friend looking for diamond earrings for daughters 21st. The man gave budget, Kurt worked with him, gave expert guidance on price, quality, size etc. on top of that, the lady brought 12 items of all sorts of jewelry to clean (which Kurt Did while her friend was deciding earrings). *Also, the lady ended up buying a couple of diamond rings. **Kurt, even cleaned the diamond earrings the guy ended up buying. He is so kind, honest, great service, patient, multitasks, he cares to listen, has great attitude, easygoing, will help find what u like, fix pieces if he can. I didn't go to any other booths However tempting it was to "look around". going back w/my daughter, found items she may like. read more

BEST JEWELER around! We can't say enough great things about Kurt. He is very honest with a ton of integrity. I have been coming to him for years, purchased our engagement ring with him at a fraction of the price of retail stores and better quality! We refer as many people as we can to him, great guy, great prices and HONEST! He is the first booth to the far left when you walk in. read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

See all

I found Kurt on Etsy and immediately fell in love with his work. Especially the morganites. I visited Kurt's shop with my fiancée and we were able to have a morganite engagement ring made custom just for me. Affordable, in our budget and exactly what I was hoping for. Thanks Kurt! You're one of a kind! read more

See all

If you are looking for an engagement ring, here is the perfect place. I absolutely fell in love with my engagement at first sight. I have shopped around for a few places and I was very impressed with Kurt's professionalism, knowledge, and world class customer service. I was able to shop with no pressures of buying a ring. Kurt was very friendly and gave very good advice. I felt very comfortable with him and trust his recommendations. He made me feel confident of my choices and I am so happy with my purchase. He is also a certified gemologist and does designs his own jewelry. I don't meet too many ppl that are as qualified as Kurt! read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

Kurt is the man! Our relationship started when he assisted in hand crafting the perfect engagement ring for my then fiancée & now I go to him for every jewelry need. His pricing is always fair & affordable & he provides appraisals for each of his diamonds. He is so amazing that I have referred over 5 of my friends who have gotten married in the past 3 years & they each agreed that he was the best after getting multiple estimates elsewhere. Lastly he provides jewelry cleanings for life after purchase. Truly a 5 star experience read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

First I found Kurt's store on Etsy and realized his store was not greasy far from where I live so I decided to pay him a visit. Ever since my first visit I've done a few of customized pieces with Kurt and genuinely love all of them! This opal ring is by far my absolute fav. Haven't taken it off since the day I got it. Kurt is very responsive and super fair with the prices read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

What can I say that hasn't already been said. Kurt (UBS Diamonds) is THE MAN like someone else already said. He has the best prices, best service, best custom orders and EXTREME patience with demanding customers (like myself). I refuse to go anywhere else. I have and learned my lesson. My entire family has been going to him for almost 30 years. Even though I no longer live there I travel there just to see him, that is how good he is. I would say enough said and I could go on, he has honesty and integrity and is just a real pleasure to do business with. It is almost like family. We love you Kurt (and your mom and aunt)! read more

Kurt is the absolute best! I can honestly say he will be my official Jeweler for life. So let's rewind to 5 years ago when I upgraded my wedding band set. So first off, I wanted a floating setting and no one offered the style, it's a "liability", according to other jewelers. I understand the maintenance of this setting, have had loose diamonds before, have had them fall out and have even lost one. It's the price you pay for the look. But doesn't mean it shouldn't be offered, it's my favorite look. I hate when diamonds are set in too much metal on wedding rings , makes them look clunky. Any who, After searching for what felt like for ever, Kurt had my band and has been maintaining it ever since! He's been so nice about it and doesn't mind my frequent drop in's just to get my prongs checked. He actually suggest that I do it .... Since my initial purchase with him, the setting and wedding band, which he gave me at an outstanding price, I have purchased from a few times after that. Last actually today with a Belize pendant I have been eyeing for a while now. He just has the best prices around and the quality of the diamonds are outstanding. I have never seen one with even a slightly yellow tint before. I just wanted to write him a review as I have been so happy with his service and products over the years. Thanks Kurt , will impulse buy with you again on a random ring check. read more

UBS Diamonds - Floating Diamond rind setting. - Jewelry Near Me - Fullerton, California

See all

My husband bought my wedding rings from Kurt 14 years ago and I love my rings!!! Kurt's a great guy and very honest. read more

UBS Diamonds - Jewelry Near Me - Fullerton, California

I had wanted to custom design my then fiance wedding ring & was referred to Kurt by one of my coworkers who had her gorgeous wedding ring made here. I liked Kurt right away, he was so friendly open and very knowledgeable. booth #A-8 read more

My family has been going to Kurt for over 20 years. He and his sister are amazingly kind, honest, dependable. Their selection is beautiful for any occasion or gift for special people. His honesty and Non-pushy personality is refreshing. He lets you take your time no matter how small a purchase. Great customer service and satisfying shopping even if you don't buy on spot. read more

Kurt was extremely helpful when it came to picking out an engagement ring for my fiance. Not only did he do custom work on the band, he also had a good selection of diamonds and hard-to-beat prices. On top of that, he wasn't pushy and in fact was extremely friendly. We compared prices and service with many other jewelers at the Fullerton Jewelry Mart. Some were okay, some were good, but Kurt and UBS were the best. I highly recommend checking them out. The booth is in the northwest corner of the store, right by the door. read more

The best jewelry experience I could have asked for. Kurt is the best jeweler and went out of the way to make sure I was happy. He can design and create anything you want and I am more then thrilled with the ring he made me for my fiancé! I would recommend Kurt for anything you need and he adjusted two other rings the same day with no problem! I will be going to Kurt for everything I need from now on and have already referred two of my friends to him!! Highly highly recommend! read more

Kurt is outstanding designer and businessman! We've recommended him to countless other couples since he designed my engagement ring and wedding band in 2015. He was recommended to my husband via my brother in law who went to Kurt originally for his wife's wedding and engagement band/ring as well. We will always recommend / use Kurt for our diamond needs, very trust worthy and high integrity! read more

Let me start off by saying that I am part crow. Anything sparkly grabs my attention- glitter, tin foil, broken glass.. you get the picure. Knowing the aforementioned quirk, the Jewelry Mart is my happy place and UBS is the twinkle in my eye. I was referred to Kurt by a few friends who had engagment rings made by him. Each one ring is beautiful and unique and I secretly want to steal each of them (oops, cat's out of the bag; sorry ladies). Kurt is super friendly, patient and has a good eye for details. He's also approachable, so I don't feel silly for asking questions. USB's service is great. He sized a ring for me this weekend and while I waited helped me design a ring setting for some random sapphire and diamond studs I don't wear (if you've ever had your ears stretched, baby studs just don't stay in- what was I thinking?). Quality and pricing is great, and when the BF and I are ready to shop for THE ring (sigh), I know we'll go see Kurt. read more

Excellent service! I called to get a diamond switched out and to get my ring resized and made thicker. It came out perfect! I'm so glad my fiancé accidentally found this place! Lol read more

UBS Diamonds - My beautiful engagement ring! I absolutely am in love with it! Can't wait for my 10 year diamond upgrade lol - Jewelry Near Me - Fullerton, California

I went to the jewelry mart to secretly spy on another shop/booth that I've been emailing with regarding a custom setting for a 0.58 carat diamond. I checked out several booths who quoted me lower prices than the other place but I didn't feel confident. The other booths I visited also tried to sell me semi-mounts to reset the 1.1 carat diamond that I was already wearing but I tried to stay strong and keep looking because honestly, this place is just so overwhelming and the prices seemed to get lower the further I went. I wasn't even halfway through the entire room when I happened upon Kurt's booth. He was just quietly arranging some items for his display while I browsed through his semi-mounts. He graciously let me try on all the settings I was interested in. Before I even asked him for a quote on the setting I had in mind, I found the perfect already-made-setting for my small center stone. All we needed to do was put it in the ring! I was hesitant at first because the deal he gave me was almost too good to be true but I finally gave in. He even took me back to the jeweler's room where they put my stone in this beautiful setting. He also cleaned my other rings for me. I'm so impressed by his no nonesense style and professionalism. No pressure to buy from him at all. After we completed that transaction, I showed him the setting I originally had in mind and he was like, you know what, I just got something in that's very similar to that and he wasn't lying! He quoted me a price that's almost half of the other places to custom make the setting. I'm definitely coming back for him to make me that setting for my bigger diamond. So excited! read more

See all

Thank you Kurt for making my 52 year old wedding ring look new again, replacing prongs, cleaning and polishing. Pleasure to go to someone trustworthy and who made good suggestions for the safety of my gems! read more

Kurt has been our go to jeweler for the last 14 years. Several of my friends and family also trust and use Kurt. He is a great person to do business with. He is always very professional, yet very personable. His information and insight about diamond cut & quality was very helpful 14 years ago when my husband was first diamond shopping for an engagement ring. When it was time for him to purchase he had no doubt about buying from Kurt. We bought our wedding set with Kurt and several other pieces though the years. I just can't Thank UBS enough for their quality Gems, service and a truly wonderful experience. It is obvious Kurt takes pride in his work and has accumulated a well deserved top notch reputation in his business. I won't trust my jewelry with anyone else. He's the best! read more

Kurt is so great!! He was so helpful for me as I was getting a ring for my soon-to-be fiancée. He helped me with materials I already had and helped me make decisions about the ring that benefitted me and were cost effective. After I proposed, I found that the ring was just too small for her so we went back to him and he resized the ring in about an hour so that she could have it back. A fine gentleman with your best interest in mine. I HIGHLY recommend Kurt. read more

My mom was s long time customer of Kurt's and they became good friends. I won't take my jewelry to anyone else, so I only get repairs when I visit Cali. I only trust Kurt with my jewelry and his prices are fantastic. read more

I came here to get my engagement ring resized and the experience I had was beyond belief. The quote I received was the lowest and that's what bought me in. On top of charging half of what other places charge, my ring was polished to look bright and brand new for no extra charge. The customer service I received was on a level more places should strive for. Also, there was no seam left in the ring at all, I could not tell visually that the size had been altered (apart from the awesome shine job). I will make it a point to come here in the future for my jewelry needs and I hope everyone gives them their business. You will not be disappointed. read more

First let me say that Kurt is awesome! I was looking for an engagement ring for girlfriend at the time (fiancé now) I went to the jewelry exchange in Tustin and was so let down. It felt like a used car store and I felt pressured to buy a diamond that wasn't certified and had huge carbon spots in it. I know a bit about diamonds and thought the jewelry exchange would have been a good place to go. Let me say DO NOT GO THERE! Anyway I found the jewelry mart in Fullerton and thought I'd give it a try. When I walked in I found UBS and Kurt was so welcoming and professional. He knows what he's talking about and gave me a pressure free buying experience. I found the ring that we wanted and bought diamonds that were better than I expected to get! For the price that the other place was trying to sell a flawed diamond I got a GIA certified VS1 from Kurt. Could not recommend this place more. Thank you so much UBS you guys are awesome. read more

UBS Diamonds - Engagement ring from UBS - Jewelry Near Me - Fullerton, California

Kurt has been our jeweler for years. He designs beautiful jewelry. We are getting ready to celebrate our 25th Wedding Anniversary and my husband purchased an amazing diamond at an incredible price as well as a gorgeous setting. Then he put my other diamond into my husbands original large nugget ring. It came out beautiful. My son purchased his wife's 1.04 carat diamond solitaire and diamond band from Kurt in 2005. At the beginning of the year my sisters Fiancée purchased her three stone pave set wedding set from Kurt as well. All that being said, we live in Colorado and Kurt will ship anything, send pictures and do anything needed even all these miles away. read more

I've been a customer since 2002, I can't believe I haven't posted a review sooner ~ sorry Kurt! :) I love shopping at UBS because not only does Kurt have absolutely the best prices for fine jewelry, his selection is unique, beautiful, and of the highest quality, and his service is professional, courteous and kind. I don't know why anyone would ever shop retail again! I have bought a total of three diamond rings over the years, and I just referred my son to Kurt. I moved back to my homestate of Oklahoma a few years ago, but save all of my jewelry shopping for when I visit Orange County.There is only one jeweler for me! read more

I had left I bad review on what I had bought and I just want to say I was wrong where I had the jewelry tested they had made a mistake and the diamonds I bought are real read more

UBS IS HANDS DOWN THE BEST! Kurt has the best prices the freshest items and is awesome at custom designs and customer service. The quality and craftsmanship cannot be beat by anyone else in the jewelry mart. He has been our # 1 go to guy for our ENTIRE family for more than 15 years. We have had family come all the way from Canada & Arizona to buy engagement rings and much more. And if he doesn't have it he'll get it for you and if you can imagine it he'll make it for you! I have never been disappointed and always walk away with a smile oh and walk back with one too. Anyway enough said he's the best! read more

My family has been going to Kurt for over 20 years. He is honest and very knowledgeable. If he doesn't have exactly what you are looking for he will design it and get it for you! He also has the best prices around. I am so incredibly happy with my engagement ring, and both my husband and my wedding bands. If you want fantastic service, great quality, and great prices, you have to go to UBS Gems and see Kurt. I will absolutely never go anywhere else. read more

I had my grandmothers diamonds and wanted to put them into a wedding band, but was worried about finding someone I could trust. My then fiance and I were referred to Kurt by my grandmother and aunt, who are both long-time clients. He custom made a wedding band to hold my grandmothers diamonds and match my engagement ring. He did a fantastic job, they look like they were bought as a set. I have only gone to him ever since. read more

The best jeweller at the Fullerton Jewelry Mart. Wonderful selection, very helpful. We have been going here for 20 years.