Credexium
Independently graded for exceptional light performance

A better diamond. A ring that is entirely yours.

Start with a handpicked GCAL 8X lab-grown diamond — or a clearly labeled Ideal-cut alternative when one isn't available — explore only settings that fit it, and see the complete price as you build.

  • Free insured shipping
  • Exact certificate included
  • Secure checkout
Accented engagement ring setting

Featured setting

Accented

Setting from $1,821

Build this ring

Why 8X matters

See what makes the diamond different.

GCAL evaluates eight aspects of cut and light performance. Hear directly from GCAL’s president why the 8X grade was created and what it means when you see the diamond in motion.

Video by GCAL by Sarine Diamond Grading Lab

Quality is already filtered

Every center diamond passes the same demanding cut-performance standard.

Every option fits

Choose a diamond and see ring styles made for its exact shape and dimensions.

The price stays clear

Diamond, setting, sizing, shipping, and tax are shown before you pay.

Start with the stone

Build around your diamond

Choose a shape and compare available diamonds, then explore ring styles and settings that fit your exact selection.

Open the ring builder

Start with the look

Browse favorite settings

Explore ring designs visually, filter them by style, shape, and price, then choose a compatible center diamond.

Browse ring settings