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. 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.
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. 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.
Services
Kortz will be there at every step of the process to make sure you get everything you need. And we'll make sure you get the highest quality and the best possible price. There is no other jeweler in Colorado with the experience we have. Our ability to source the best products is unmatched. Think what you want is impossible to find?
For four generations, Kortz Originals has specialized in the highest quality, beautifully designed, custom jewelry. We continue to do that! We are Colorado's oldest and finest jewelry store but with the internet we are able to now reach customers worldwide. But we are also excited to add a collection of outstanding Designer Jewelry of all types from outside artists, craftsmen and women.
View our amazing display of loose diamonds, displaying "Light Return" of "Very Good or "Excellent", indicating "Sparkle" brighter than 95% of the world's diamonds with the same color and clarity. Use the tool below to search and filter diamonds. Scroll below for more information on selecting a great diamond.
Reviews (10)
Jan Hirschfeld
Jul 17, 2021
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Bob is very helpful in designing jewelry that is unique and classic using jewelry that I already owned. He listened to what I wanted then made suggestions and gave options to ensure I would have the perfect pieces. I have been given many compliments on these two pieces designed by Kortz Originals. The picture does not do justice to the beautiful jewelry Bob designs.
Eric Seidel
Sep 06, 2020
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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
ps. My wife loved
Lisa Whitsell
Jul 29, 2020
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I have worked with Bob Kortz for over 20 years. He spent hours if not days to find the perfect blue sapphire at no charge. He truly loves what he does and has become my personal jeweler. Whether you are looking for a custom engagement ring, loose diamonds or gemstones you cannot go wrong with Kortz. They also have an amazing online store for jewelry.
Erika Holley
Dec 30, 2019
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I had the absolute pleasure of working with Bob Kortz, the personal jeweler from Kortz Originals. Bob went above and beyond to create something unique, one-of-a-kind and exactly what I wanted.
I started with an antique wedding band with small diamonds, and my husband purchased me a gorgeous bridal set to accompany it, but it really needed something more. Bob looked at the pieces and created an incredible design out of what I already had, and then crafted them into a custom piece that is just remarkable!
I also had a ring that had a very large stone fall out, and Bob helped me pick a new stone
I started with an antique wedding band with small diamonds, and my husband purchased me a gorgeous bridal set to accompany it, but it really needed something more. Bob looked at the pieces and created an incredible design out of what I already had, and then crafted them into a custom piece that is just remarkable!
I also had a ring that had a very large stone fall out, and Bob helped me pick a new stone
Karen Stein
Dec 06, 2019
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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.
Karen Stein
Karen Stein
Michael Mahoney
Nov 12, 2019
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Bob Kortz, has been an absolute treat to work with. I went to him this past year to help design my wife's engagement ring. He was flexible, insightful, understanding and patient. We went through several redesigns of her ring. Not only did Bob not gripe about the changes, he encouraged them as what I was looking for in the ring became more and more clear over time!
The design process was a marvel. Bob creates accurate 3d CAD renderings of any proposal, giving a true sense of what the real deal will look like. Bob was adamant I choose any gem to be put in the ring in person so I would know exactly
The design process was a marvel. Bob creates accurate 3d CAD renderings of any proposal, giving a true sense of what the real deal will look like. Bob was adamant I choose any gem to be put in the ring in person so I would know exactly
Jasmin Abdel-Nabi
Jun 11, 2019
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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
Gini Krattenmaker
Jun 03, 2019
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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.
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.
Dennis Wakabayashi
Sep 26, 2016
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We had our engagement ring created by Kortz and we've loved it for 20+ years now! Bob took the time to understand our budget and and then took our crazy design ideas and brought them to life. One of our crazy ideas was to embed a "secret" diamond into the inside of the ring that no one knows is there except for my wife. Kortz made it happen. We've since come back for other pieces and never been disappointed by the service or quality. Definitely a recommend!
Lauren M.
Jul 24, 2016
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I cannot say enough about The ring Bob Kortz designed for me
From start to finish he guided me into the ring of my dreams
I know it's corny but it's the best way to describe it and him
I've never seen anything like it
It's a classic diamond but in the most contemporary setting
I wish I could show a picture of it
I wonder if I could but then you would want one just like it
I would gladly recommend him and his original designs to family friends and whomever
With total confidence and that is very rare for me
Thank You Bob, THANK YOU
From start to finish he guided me into the ring of my dreams
I know it's corny but it's the best way to describe it and him
I've never seen anything like it
It's a classic diamond but in the most contemporary setting
I wish I could show a picture of it
I wonder if I could but then you would want one just like it
I would gladly recommend him and his original designs to family friends and whomever
With total confidence and that is very rare for me
Thank You Bob, THANK YOU
