Our offices are open for appointments. We will continue to offer Virtual Consultations for those who prefer! Schedule a virtual consultation with Kaeleigh or Erin below.

Diamond Rings

The Diamond Reserve is Colorado’s most trusted custom jeweler. We specialize in the most brilliant engagement rings, GIA-Certified loose diamonds, and custom jewelry. Unlike retailers, owner Kaeleigh will meet with you one-on-one for personalized diamond consultation.

The Process

At The Diamond Reserve, we create custom engagement rings while providing our clients with one-on-one service and transparent expert diamond education.

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We educate each and every one of our clients on the 4C’s of diamonds and more. It is our mission for you to feel educated and confident when selecting your diamond.

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Our team will guide you in selecting the diamond or gemstone that fits your needs and budget, answering all of your questions, and making sure you get the best price.

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Once you have approved the 3D renderings our bench man begins to make the magic! All our engagement rings are handmade right here in Colorado to the finest quality. 

Questions? Let's talk!

Loose diamonds

Diamond Education

Start getting educated on diamond quality and terminology before booking your private appointment.

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Engagement Ring Inspiration

Follow us on Instagram to see our latest designs and get inspired.

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Why The Diamond Reserve?

See what makes The Diamond Reserve experience unparalleled to the retailers.

Kaeleigh Testwuide


I am Kaeleigh Testwuide, founder and diamond expert at The Diamond Reserve. Thank you so much for visiting with us! My number one goal is to get you educated on all the dos and don’ts of buying a diamond, making sure you get the best diamond for the best value! 

There is so much information out there regarding diamonds and a lot of mistrust when buying a diamond. At The Diamond Reserve we will give you the truth, answer all of your questions, and ensure that you feel confident when you select a diamond. Buying a diamond and an engagement ring does not need to be stressful, it should be fun and exciting, and that is exactly how it feels when you work with us. 

Are you thinking about popping THE question, upgrading your diamond, redesigning your setting, or looking for a special gift? Send me an email and I will work with you personally to make sure we send you off feeling confident and excited with your purchase!

Yours Truly,

Kaeleigh Testwuide

Who's Talking About Us

  • Courtney Parker Avatar

    Working with The Diamond Reserve is an absolute dream. They make the diamond buying and jewelry design process so easy... and fun! I cannot recommend them enough - if you are in the market for an engagement ring, diamond(s) or any fine jewelry, they are the definitely the best in Colorado and beyond.

    Courtney Parker 9/10/2019
    Kelly McNamee Avatar

    positive review  10/10! Amazing selection, very knowledgeable, and fun to work with! Great customer service. Will be recommending them to friends and family.

    Kelly McNamee 7/19/2019
  • Michael Nedler Avatar

    I inherited a ring from my aunt and wanted to remake it into something my wife would wear. A buddy suggested The Diamond Reserve so I followed his advise…a good move! Erin and Kaeleigh worked with their designer and came up with a ring my wife just loves! The cost was more than reasonable and feel like I got a lot for my money. Thanks so much ladies!

    Michael Nedler 8/26/2019
    Ethan Matthew Avatar

    positive review  Heard about this place from a friend, he gave me their number, I called and talked to Kaeleigh, she received the call and was more than happy to help me find the ring I was looking for! Very good organization, have nothing but good things to say about them.

    Ethan Matthew 10/07/2019
  • Caroline Weirich Avatar

    positive review  We had the most amazing experience with The Diamond Reserve! The engagement ring was designed with their guidance and it turned out better than I could have expected. Erin also helped us with our wedding bands. She is a wealth of knowledge and always greets you with a smile!

    Caroline Weirich 6/05/2019
    Neil Sullenberger Avatar

    Kaeleigh and Erin were both great to work with. We went with The Diamond Reserve for a custom engagement ring and custom wedding bands. They were extremely knowledgeable and helpful throughout the process. I would certainly use The Diamond Reserve again for any future diamond purchases.

    Neil Sullenberger 9/03/2019

Diamond Reserve Couples