Custom Fine Jewelry, Designed Around You
At Jack Custom Jewelry, we create custom diamond engagement rings and fine jewelry designed exclusively for you—never mass-produced, never marked up. By appointment only at our Lakeland or Winter Haven, Florida offices (or remotely, anywhere in the world), award-winning GIA-trained designer Kevin Jack works with you one-on-one to bring your vision to life. Using computer-aided design and direct relationships with diamond cutters, we deliver exceptional quality, true value, and a piece as unique as your story.

Your Ring, Your Story
Every love story is different, so why wear a ring that looks like everyone else's? With our custom ring builder, you can design an engagement ring that reflects the two of you—your style, your journey, your forever. Choose your setting, select your diamond, and bring your vision to life to create a piece as one-of-a-kind as the love it represents.




