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Old Main Gem Co

Discover Unique Engagement Rings & Customized Jewelry. 

Split-image showing an engagement ring’s design process: the left side displays a pencil sketch of a diamond ring on a spiral notebook with a pencil, a coffee cup, and crumpled paper on a wooden surface; the right side shows the finished gold diamond engagement ring presented in a brown jewelry box. This visual represents jewelry design from concept to completion, ideal for engagement ring designers, jewelers, and custom ring services.

From dainty engagement rings to non-traditional bands and modern men’s titanium jewelry — Old Main Gem Co. helps you create jewelry that feels like you.

What We've Been Working On

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What to Expect When You Book

Step 1

We get to know you

Every custom piece starts with a story. We'll chat about your vision, preferences, and timeline - no pressure, no commitment. Just creative possibilities.

Step 2

See your vision come to life

You'll receive a lifelike rendering of your piece, with time to make tweaks until it feels just right, (We'll guide you on every  detail - from cut to setting style.)

Step 3

Precision meets passion

Our master jewelers use ethically sourced gems and precision metals to create your one-of-a-kind piece - made just for you.

Jeweler meticulously setting a diamond ring

Step 4

Unbox your heirloom

Your finished piece arrives in a beautiful box, ready for your unforgettable moment.

Why Clients Choose the Old Main Way

Traci Diamond Ring Review

TRACI L.

This is hands down the sparkliest ring I’ve ever seen. I get compliments from strangers constantly — it truly catches the light (and everyone’s attention). My husband surprised me with it, and he said the design process was smooth and way faster than he expected. We couldn’t be happier.

Sandy Redesign Review

SANDY C.

The original stone lacked the color and clarity I really wanted. This new one is bigger, brighter, and completely changes the look of the ring — in the best way.

Three-stone ring with green and yellow gems

ELISE R.

I got this as a birthday gift to myself, and it’s perfect. The peridot has such a bold, beautiful glow, and the design feels so unique and special.

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