Diamond Education

A diamond should feel right for your story and your budget. Learning a few terms makes it easier to compare stones and ask good questions.

Start with the 4Cs

Cut: the way a diamond handles light

Shape describes an outline, such as oval or round. Cut quality describes how proportions and craftsmanship influence brightness, colored flashes called fire, and sparkle as the stone moves. GIA assigns an overall cut grade from Excellent to Poor to standard round brilliants in the D-to-Z color range. Fancy shapes need their own visual assessment; polish and symmetry alone do not tell the whole story.

Color: subtle differences in body color

For diamonds in the normal color range, GIA's scale runs from D through Z. D–F is colorless and G–J is near colorless. Differences can be subtle, and shape, size, lighting, and setting color affect what you notice. Fancy-color diamonds are evaluated differently. Compare stones in similar lighting rather than choosing from a letter alone.

Clarity: a closer look inside

Clarity describes internal inclusions and surface blemishes, assessed at 10× magnification. GIA's grades run from Flawless through Included. The size and position of a characteristic matter as well as its number. Some are difficult to see without magnification; others may affect appearance or durability. Ask to view the individual stone.

Carat: weight, rather than width

One carat equals 200 milligrams and is divided into 100 points. Two stones with equal weight can have different visible dimensions. Read the millimeter measurements alongside carat weight when comparing how a diamond will look on your hand.

Put the details together

Begin with the shape you enjoy, then compare light performance, visible size, color, and clarity within your budget. A report documents characteristics; seeing the stone helps you decide which differences you value. Keep the report number and ask about origin and any disclosed treatments.

There is no single combination of grades that suits everyone. Bring your questions to Clonts, and let the conversation start with what you love.