Choosing a Stone

This lesson explains the four internationally recognised qualities used to describe and grade a diamond: cut, colour, clarity, and carat weight.

This lesson explains what coloured gemstones are, why people choose them for engagement rings, and how they are evaluated differently from diamonds.

This lesson explains the most common stone shapes used in engagement rings, the difference between brilliant and step cuts, and how shape affects the look, price, and practicality of a stone.

This lesson explains the main ethical considerations when choosing a stone for an engagement ring, and outlines the options available to UK buyers who want to make a more responsible choice.

This lesson explains how to balance the 4Cs – cut, colour, clarity, and carat – to get the most beautiful stone you can within your budget.