The Studio

Light is the whole point.

Our Los Angeles studio designs and hand-makes custom fine jewelry set with lab-grown diamonds, made to order by a team with decades of high-level craftsmanship behind them. Every choice at the bench (the cut, the proportion, the set of each prong) exists to return more light to the eye.

100 Carats started with one rule: nothing leaves the bench unless it is right.

Our jewelers came up in a workshop culture where accuracy is a point of pride. Balance, proportion, and finish get checked, then checked again, and the goal every day is to make the next piece better than the last. That standard is the work of years of high-level craftsmanship at the bench.

100 Carats puts that craft behind lab-grown diamonds, so more people can own a large, certified, honestly made stone, the kind usually kept for a vault.

That is the name. 100 Carats is the ambition: real light, made by hand, made for you.

A jeweler setting a lab-grown diamond into a white gold ring at the bench in the Los Angeles studio

“Nothing leaves the bench unless it is right.”

Designed in-house

Every piece begins as a drawing of light.

Before anything is cast, your piece exists on screen. We draw it, model it in 3D, and refine every proportion until the design returns light the way it should. From that model we 3D-print an exact castable wax pattern, accurate to a fraction of a millimeter.

A jewelry designer seen from behind, modeling a diamond ring in 3D CAD software on dual monitors, with calipers and ring gauges on a clean studio desk — Modeled in 3D Every piece is modeled and refined on screen before we commit a single gram of metal.

A batch of 3D-printed soft-red castable wax ring patterns fresh from the high-precision wax printer — Precision-printed in wax The model is 3D-printed as a castable wax pattern, so the finest detail carries through to the cast piece.

A 3D-printed soft-red castable wax ring pattern held in jeweler's tweezers under bright inspection light — True to the micron High-precision equipment keeps proportion, symmetry, and stone seats accurate from screen to metal.

From that pattern, your piece is cast in the metal you chose. What comes next only hands can do.

At the bench

The cast piece arrives raw. It leaves glowing.

Fresh from casting, the metal is cleaned, shaped, and brought to a polish. The stone seats are trued by hand. Then the diamonds go in, one at a time, and the piece starts doing what it was drawn to do.

A jeweler inspecting a large loose lab-grown diamond in tweezers up to the light — Inspect Every center stone is examined under the loupe before it goes near a setting.

A jeweler setting the diamond into a white gold ring at the bench — Set The stone is set by hand, prong by prong, until it holds true and sits level.

A jeweler examining the finished white gold diamond ring under a loupe for a final check — Polish and final check The piece is brought to its final polish, then checked once more under the loupe before it ships.

A white gold diamond ring in an open 100 Carats box, with a branded gift bag, gift box, ribbon, and a care card in a stationery envelope

Our promise

What comes with every piece.

Every piece leaves the studio finished, checked, and boxed, then looked after for as long as you own it. The making is only half of it. The rest is how we stand behind it.

Made to the highest craft

Every piece is crafted by hand at our own Los Angeles bench, never outsourced. Held to our standards and checked at every stage, from first sketch to final inspection.

Certified center stones

Center diamonds always graded to IGI standards. Stones at half a carat and above will deliver with their proper certification report.

Lifetime cleaning

Bring your piece in any time for a checkup. We will clean it and check every setting, so it keeps its light for years.

Complimentary resize service

Never worry about landing the exact size. Your first resize is on us, so you can order with confidence and adjust for the perfect fit later.

Covered against defects

Every piece carries a warranty against manufacturing defects. If it left the bench wrong, we make it right.

Insured and expressed

Your piece is fully insured and expedited to your door. Presentation-ready from the moment it arrives, so it's ready to give or wear the day it lands.

Start a Custom Piece.

Tell us what you have in mind. We will shape it with you, from the first sketch to the final set stone.

Begin Your Inquiry