Research hub

Engagement ring research hub

Every True Carat guide, organized by what you are trying to decide. Work through a topic cluster, then put the numbers to work in the ring calculator.

The 4Cs: cut, color, clarity and carat

The four grades that decide what a diamond looks like and what it costs. Start here to understand which grades are worth paying for and where you can save without anyone noticing.

Diamond shapes and ring settings

Shape and setting define the ring's personality. Compare how each shape looks on the hand and which settings protect the stone, add sparkle, or stretch a budget.

Prices, budgets and value

What rings really cost and how to get the most for your budget — including the lab-grown question and the traditions around who buys what.

Sizing and wedding bands

A ring that fits and a band that matches. Measure at home with the size chart, then design and price the wedding band to sit alongside the engagement ring.