Welcome To Kortz Originals

Kortz Original Custom Jewelry

We specialize in custom jewelry design, diamonds, gems and jewelry buying. From custom engagement rings to custom pendants and more. We’ll help you design your dream jewelry using our Countersketch jewelry design software.  We can do it together side by side if you are in the Denver area or anywhere in the world online using zoom. Either way you will see your piece as it’s being designed real-time!!!  We can procure gems and diamonds for you or use a stone you have. Keep reading below to learn more about our custom jewelry design process

Are you searching for an impossible stone?  We love a challenge!  We will hunt down your ideal gem at the best possible price. 4 generations in the jewelry business has given us contacts and resources to source the best products you won’t be able to find online and we do it absolutely free.  Our time is at no charge.  You only pay for the jewelry we help you custom create.  Our time is priceless.


Custom Jewelry Design Process

  • Step 1

    Send Us Your Ideas

  • Step 2

    Work Together with Kortz to Customize

  • Step 3

    Create a Wax Mold of Your Design

  • Step 4

    Finalize Piece

Legendary Jeweler, Bob Kortz, will be there to walk you through every step of the process.


Custom Jewelry is Fun and Affordable

You may think that custom jewelry design is out of your price range.  But you’d be surprised to learn that custom jewelry is actually quite affordable and we provide all consultation ABSOLUTELY FREE.  That’s right!  We will hold your hand throughout the entire custom design process as zero charge.  Why?  Because we know after we have gained your trust, we will work together to make your design a reality.

Your One Stop Shop for All Your Jewelry, Diamond and Gemstone Needs

We realize you have a choice when it comes to selecting a jeweler. With over 4 generations in the jewelry business we have become a trusted name. We will go above and beyond to ensure you are getting the best quality for the best price. To make your jewelry shopping easy we have implemented 3 easy to use tools on our website. But at any time if you are nervous please give us a call or click our chat button below. We can help you to pick the perfect diamond, gemstone or piece of jewelry.

About Kortz

Established in 1892 as a family-run business,  Kortz Jewelers stood as a sparkling landmark in the heart of the 16th Street Mall in Denver,CO.  Handed down from three previous generations, Robert Kortz took over the family business in 1985.

Kortz Originals was born, in order to focus on one of a kind, custom made jewelry. Kortz Originals specializes in personalized designer jewelry.  Although we are still located in Denver, through the power of technology, we can help you anywhere in the world. 



Customer Testimonials

Jasmin Abdel-Nabi

Bob Kortz is an amazing jewelry and tons of fun to work with! Together, we made many beautiful pieces of art. When I asked him to make my sisters ring for her engagement he jumped on the opportunity! We spent months working on a rose gold ring with Swarovski Pink Morganite and diamond clusters.. wow- what an amazing ring. Classy, funky, and sparkly just like my sister and her fianće! <3

Nancy Burke

I appreciated the very professional and courteous service. It was a true pleasure with excellent results. I’d recommend to anyone.

Eric Seidel

What a fantastic experience it was working with Bob Kortz directly! I was referred to Bob, as I was looking to make something unique for my wife's birthday. Not only was Bob extremely helpful throughout the process of designing the necklace, but he was able to figure out how to source all of the gems and chains during the COVID shutdowns! After several logistical changes, Bob still had the necklace finished with a week to go, before my wife's actual birthday! I would highly recommend Kortz Originals to anyone looking for jewelry, I will be a repeat customer for sure. Thanks Bob! ps. My wife loved the 3-birthstone pendant! (Diamond for her, and Aquamarine and Amethyst for our 2 boys)

Gini Krattenmaker

Bob was helpful,knowledgeable,and personable when helping me to choose a gold band recently. He took his time to help me find precisely what I wanted; taking care that the ring would fit just right. It does and I love it! On a separate occasion, I fell, distorting a ring and slightly injuring my finger. Bob called to be sure my finger was okay offering help if needed. He’s a real pro and highly recommended.

Carl Wallace

Bob is such a lovely, talented and honest man. I have known him for 20+ years and my father knew him 20 years before that! Beautiful, fairly priced stones in timeless and very custom settings! Only jeweler to ever consider! Can’t go wrong.

Ginger Susman

Bob is a delight to work with. I was surprised at how quickly he was able to source exactly what I wanted from his vast network of wholesalers at a reasonable price. He came to me and made the entire buying experience easy.

Jaeson White

Positive: Professionalism, Quality, Responsiveness, Value
Bob helped me purchase earrings for my wife's birthday. Working with him was an amazing experience. Bob was able to source a few sets to evaluate for purchase. He was honest, sincere in his assessment and recommendation of the earrings I purchased. Throughout the entire purchase process, I felt Bob had my best interest in mind. Kortz Originals will be my go to from now on for any jewelry needs.

Karen Stein

My name is Karen Stein and I would like to share my experience dealing with Kortz Originals. Bob is a very creative and engaging professional who designed a custom necklace using my Mother’s diamonds. It is by far the most beautiful piece of jewelry I own. Hardly a day goes by without someone commenting how beautiful my necklace is. I would highly recommend calling Bob to create a custom, memorable piece of jewelry for you.

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Contact Info

We have a physical location in Denver but service clients worldwide.  

We can meet by appointment or online with Zoom!

University Building, 910 16th Street Mall, Suite 425, in the Denver Diamonds Store