Formally of Youngstown, Ohio, Matt Carlozzi Jr. ushered into the jewelry business as CEO/Owner of a manufacturing and loose diamond wholesale company featuring his patented loose diamond design. With his roots firmly planted in the capital city, Mr. Carlozzi owns and operates CDI Diamonds & Jewelry (formally Bernie Helmick Diamonds & Gold) which has been serving the Columbus area for over 20 years.
CDI has amassed an impressive 490, 5-star reviews on Google that continues to grow daily. CDI specializes in certified loose diamonds, diamond wedding bands, engagement rings, designer sterling silver collections, and lab grown diamonds. I looked at the store's website before going in and liked a certain piece of jewelry that was in my budget.
CDI has amassed an impressive 490, 5-star reviews on Google that continues to grow daily. CDI specializes in certified loose diamonds, diamond wedding bands, engagement rings, designer sterling silver collections, and lab grown diamonds. I looked at the store's website before going in and liked a certain piece of jewelry that was in my budget.
Services
CDI Diamonds & Jewelry has a large selection of certified loose diamonds to meet all budgets. In today's changing environment, CDI only offers diamonds which have Accurate Diamond Certificates unlike what's being offered by the larger locally advertised stores and the internet who claim to have the best prices available.
Lab Grown Diamonds are man-made diamonds created by simulating the natural conditions of extreme heat and pressure that occurs deep within the earth where natural mined diamonds are born. Lab Grown Diamonds are identical to natural mined diamond chemically, optically, and physically. Much like the ice you make in your freezer at home compared to ice which is made on top of a mountain, the result is that they are both ice.
CDI Fully guarantees all purchases for a period of twelve months against defects in material or workmanship. CDI will repair or replace any defective product excluding items which are damaged from excessive wear or has been worked on by other jewelers.
Family owned and operated by Matt Carlozzi Jr. and his son Matt III since 2001 as Bernie Helmick Diamonds and Gold, our deep roots in Columbus and incredible customers keep us humbled, and grateful to be part of the community.
Family owned and operated by Matt Carlozzi Jr. and his son Matt III since 2001 as Bernie Helmick Diamonds and Gold, our deep roots in Columbus and incredible customers keep us humbled, and grateful to be part of the community.
Minimum monthly payments are required during the promotional (special terms) period. Interest will be charged to your account from the purchase date at the APR for Purchases if the purchase balance is not paid in full within the promotional (special terms) period. Paying only the minimum monthly payment will not pay off the purchase balance before the end of the promotional period.
Reviews (13)
Kim Crabtree
Dec 21, 2021
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Ran in last minute to have them look at my wedding ring and quote me on fixing it. I ended up leaving my ring there, on a Friday (12/17) at close. Was given a completion date of 12/23/21. I received a call on 12/20 letting me know my ring was ready!! I am thrilled with the outcome, my ring looks amazing! Thank you to all involved.
Anthony V.
Dec 16, 2021
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Renee Geiger
Dec 12, 2021
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Mary Ellen Burkhart
Dec 04, 2021
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Mia Miller
Nov 14, 2021
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We are happy CDI Diamonds customers! Matt was warm, welcoming, authentic, knowledgeable, easy to work with, and made us feel like we were in good hands. He didn't rush our experience and truly listened to what we were looking for and wanted. The shoppe had a beautiful selection of jewelry and the people who were working there on the day of our visit provided top notch customer service. We didn't even consider looking at engagement rings anywhere else after visiting CDI Diamonds because we were so happy with our experience!
Michelle Brumm
Sep 25, 2021
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CDI gets a 10/10 from me for pricing, customer service, a laid back buying experience, and for having the only ring I would consider wearing forever! We shopped around at at least 10 other places just to see what else was out there, but couldn't feel better about spending our money at this small, privately owned business. Jay was a straight shooter from the beginning - he's confident he has a good product and good products sell themselves. Apparently his gift is being able to pick out a ring for someone he's only known for 5 minutes; as it turns out the one he suggested was THE ONE for me. About
Sam Peirano
Sep 15, 2021
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I looked at the store’s website before going in and liked a certain piece of jewelry that was in my budget. I met the owner named Matt who was very nice, friendly, and respectful. He helped me through the buying process and educated me on many other things. The best part was the piece of jewelry that I wanted was more expensive in the store, however Matt respected the price found on the website and gave me the same piece at a significantly lower price!! They have so many more beautiful pieces of jewelry that are in your budget! I will be coming back here for all my jewelry needs! Thank you Matt
David McConnell
Jul 25, 2021
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I walked into CDI to have links taken out of a watch which Matt did for no charge. Based upon that great experience, I returned to find a better quality diamond for my wedding ring since we were poor when we bought it years ago. I ended up with an entirely new ring that is stunning! I have had many compliments already. Somehow, Matt found the perfect ring for me almost immediately. Seriously, I tried on two and found the one that suited me perfectly! I have already recommended CDI to others! Thank you so much!
Mary Beth Boyle
Jul 22, 2021
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I am so happy with restoration of my wedding band and engagement ring. They did beautiful work!! I haven’t been able to wear my original set in over 20 years due to lost stones, not fitting and a poor design. It is so nice having back on my finger. They were able to keep the identical look but reset to make it durable and safe to wear. I’m sorry I waited so long to have it restored!!! I recommend them highly.
Dawn Stock
Dec 29, 2020
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Drew Rose
Sep 03, 2020
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Words can not express how great CDI is! Matt and his staff were all very professional, demonstrated extreme knowledge and were truly customer oriented. We felt very comfortable asking lots of questions, trying on different items and Matt even let us look at diamonds up close through their special equipment to view them! I thoroughly enjoyed my time spent their and will recommend my friends & family to go see them! We will for sure be back for future purchases.
Tami Connolly
Dec 07, 2019
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Matt and Ernie at CDI are totally amazing! After visiting chain jewelry stores we decided to stop in CDI to look at engagement rings. Knowing the chance of having what we were looking for was slim to none. Within 40 minutes of showing them the ideal ring, they made calls and searching on line and we anxiously awaited Matt’s call to say he had the setting and matching diamonds ~ They were perfect! Within 7 business days my gorgeous ring was in. Words cannot express the most exceptional Customer Service and quality received! Matt was awesome working with us on our budget and delivered top quality
Deborah Brenneman
Feb 20, 2019
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Matt and his team are absolutely amazing. We wanted to upgrade my ring for our 30th anniversary. We shopped many places and then went to CDI. They blew everyone else away by miles! We got a stunning stone and mounting for an incredible price. Matt, Ernie and Jay were so incredibly helpful. This is hands down the place to go. We will never buy diamond jewelry anywhere else! I can’t stop staring at my fabulous ring. Thanks CDI!!!!!
