Custom-designed engagement rings, Dearborn.

Who are you when you wear Custom by Z?
You’re not just wearing gold, diamonds, and artistry—you’re wearing recognition. You’re wearing confidence. You’re wearing a piece that tells the world you know your worth.

If you’re considering an Oval Diamond Center stone or a Lab Grown diamond for your custom-designed engagement ring, we’ve got you covered. Our expertise in crafting bespoke diamond engagement rings spans over 30 years, and we’re dedicated to providing lifetime service for your ring, free of charge. When you choose us, you not only gain access to a GIA diamond grader, but also a seasoned jewelry repair bench specialist and a skilled Jewelry Designer with 30 years of experience. For 30 years, we’ve remained in the same location, under the same name and ownership, consistently delivering exceptional quality and service. Let us bring your dream ring to life.

Interested in starting your custom-designed jewelry piece? Click here

You’ve worked hard for every moment that brought you here.
Now it’s time to celebrate who you’ve become—with jewelry designed exclusively for you.
✨ You deserve to have Custom by Z.
✨ You deserve to wear Custom by Z.
N.J. Diamonds | Custom by Z
Where your story becomes a masterpiece.

• Round Diamond Custom Designed Engagement Ring
• Oval Diamond Eternity Wedding Band
• Custom Design More Than a Piece of Jewelry.
• Top Custom Jewelry Designer in Dearborn, MI
• Jewelry Appraising