About Us

Key & Carat is a Lubbock, Texas-based fine jewelry company created around a simple idea: beautiful, high-quality jewelry shouldn't require the traditional retail markup.

We specialize in lab-grown diamonds set in solid gold and platinum, offering everything from timeless everyday pieces to custom engagement rings and one-of-a-kind designs.

We personally source our diamonds and work closely with our clients to create pieces that feel special, personal, and made to last. Whether you're choosing an engagement ring, celebrating a milestone, or simply adding something beautiful to your collection, our goal is to make the fine jewelry experience feel personal and approachable.

Based in Lubbock, Texas, and serving clients nationwide, Key & Carat brings together exceptional diamonds, beautiful craftsmanship, and better value, without compromising on the details that make fine jewelry worth keeping.

EXCLUSIVE COLLECTION

Custom Made Lab Diamond

Jewelry Only by Key & Carat

© Copyright 2026. Stephanie Key Coffman. All rights reserved.