Cosmo Carat · New York
Your brilliance,
written in the stars.
A fine jewelry house founded on one belief —
a stone is only as powerful as the meaning you bring to it.
Why Cosmo Carat Exists
Fine jewelry that’s scientifically proven, and personally meaningful.
Cosmo Carat is founded and led by a GIA Graduate Gemologist. Every piece we make is graded by the same standards used to certify the world’s finest diamonds — and every center stone ships with an independent IGI certificate for cut, color, clarity, and carat. The proof is in your hand, not just our word.
That’s the floor. The reason we build on top of it is simple: a diamond is not an accessory. It is something you charge, day by day, with the life you’re living. We believe a stone’s power is the intention you keep bringing to it — and we make jewelry built to be worn, trusted, and kept.
Our Founder
GIA Graduate Gemologist · New York
What We Believe
Four quiet convictions.
Every decision we make — from which stones we certify to how we finish a post — traces back to one of these four ideas.
Jewelry is a ritual, not a decoration.
A piece you put on every morning is not an accessory — it is a vow you keep with yourself. We design for the moment before the meeting, the breath before the answer, the quiet second you choose who you're going to be today. Comfort, weight, and how a stone sits against the pulse are all part of the craft. An earring you forget you're wearing is one you will wear forever.
Your birthstone is a personal talisman.
Long before jewelry was fashion, it was a way of carrying meaning on the body. A stone tied to the month you were born, the sign you live under, the person who gave it to you. We hold that tradition close. Every birthstone we set is a small, warm point of your own story — something to touch when you need to remember where you come from, or what you promised yourself.
A stone's power is the intention you keep bringing to it.
We are gemologists by training, so we will always tell you the truth: a stone is a stone. What makes it radiate is the meaning you press into it, day after day. The earrings you wear to your hardest shifts. The pendant you touch before difficult calls. Over time, a piece stops being jewelry and becomes an anchor. We build ours to be charged — for a lifetime, not a season.
Beauty and science are not opposites.
Our studio sits where GIA-trained rigor meets celestial wonder. Every Cosmo Carat diamond is graded, certified, and traceable — because forever should be provable. And every design begins with something you can't measure on a spectrometer: the feeling of light catching before it lands. We refuse to choose between the two. You shouldn't have to, either.
Cosmo Carat aspires to a world where every individual radiates with inner strength and elegance, embodying the limitless possibilities of the cosmos.
— Our Vision
How We Make & What We Promise
Ethical radiance, certified.
We work in 14K solid gold, set with lab-grown diamonds graded by the same standards as mined ones. Nothing mined. Nothing plated. Nothing built to fade — because a piece meant to become a talisman has to last longer than a trend.
Identical, by origin only.
Our lab-grown diamonds share the exact chemical, optical, and physical properties of mined stones. Same fire. Same hardness. Same forever — without the environmental cost.
IGI certified & traceable.
Every center stone ships with an independent IGI grading report for cut, color, clarity, and carat — the same standard used to certify the world’s finest lab-grown diamonds. You’ll know exactly what you’re carrying, and where it came from.
Made to be kept.
14K solid gold in yellow, white, and rose — hypoallergenic and nickel-free against the skin. Our recycled-metal sourcing and heirloom-grade construction are built for a lifetime of daily wear.
Our collections are chapters of one story. Begin with the floating diamonds of Nova Drop, the everyday luminance of Dainty Delights, or the commitments held in Trinity Promise. Every piece is the same belief, rendered in a different light.
Begin Your Constellation
Radiate your strength.
Embrace the cosmos.
Every piece is a point of light you choose to carry. Find the one that feels like yours.