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Design your ring

Center stone

Shape

Carat

Exact weight

Length-to-width ratio

Stone

Clarity

Color

Quality

Your own stone

Have a GIA or IGI report? Drop the PDF here or paste its text. The designer builds that exact stone: its shape, weight, length and width, table, and crown and pavilion angles.

Upload report

Light performance

Traced through this exact stone's facets, the way an ASET scope shows a real one. Red is light from 45 to 75° above, the brightest. Green is from lower down, dimmer. Blue is your own head's shadow, the contrast that makes it sparkle. White is light leaking out the back. A well-cut stone is mostly red, with an even blue pattern and little white. Stone only; the setting is left out.

Light

Backdrop

Light direction

The light holds still. Drag the ring to turn it and the facets flash, or aim the light with the slider. Sparkle (under the ring) sweeps the light around instead, the way it looks when her hand moves.

Head

Setting height

Orientation

Accents

Accent shape

Accent weight

Side stone setting

How many

Accent stones

Band

Band width

Thickness

Profile

Stones on the band

How far round

Band stones

Wedding band

Metal & size

Head metal

Finish

Her ring size (US)

Your ring

Lab diamonds are IGI certified, F–G color, VS1 or better, excellent cut; colored stones come with a lab report on request. Made to order in our workshop in 3–4 weeks, with free resizing for a year.

Compare

Pin up to three builds, then compare them side by side. Pins stay on this device.

A short code that rebuilds this exact ring for whoever you send it to.

Metal & making

Weight is measured from the 3D model, using the densities in Stuller's casting table (platinum as 950 platinum-iridium). Allow about 10% either way for finishing and stone seats. Checks use common casting minimums: walls of 0.6–0.8 mm, prongs cast as rods at 0.8 mm or more, claws and bezel lips at 0.5 mm or more. Your caster has the final say.

3D file

This design as an STL file at true size in millimeters, the same model our workshop starts from. Opens in any 3D or jewelry CAD program.

Every ring is modeled to scale in millimeters, so a 3 ct oval and a 3 ct emerald show their real face-up difference. Final pieces are photographed before they ship.