Diamondtaire

A loupe, a stack of books labelled cut, colour, clarity and carat, and a round brilliant diamond on a desk

Independent Diamond and Jewellery Guides

Diamondtaire is an independent guide to diamonds and fine jewelry. We don’t sell stones and we don’t grade them — we explain how grading works, so you can read a certificate yourself before you spend anything.

How Grading Actually Works

The 4Cs without the showroom language — what cut, color, clarity and carat each measure, and which of them actually changes what you see.

Styles and Settings

What the common cuts and settings are called, how they differ in practice, and the trade-offs between them that a display case doesn’t show you.

Reading a Certificate

How to read a GIA or AGS report, where the grading labs disagree with each other, and the details a listing tends not to volunteer.

Start with the 4Cs

What You’ll Find Here

Guides covering grading, certification, care, and the questions that come up when someone starts looking seriously for the first time.

Diamond Education

Cut, color, clarity and carat — and what lab-grown stones actually are.

The storefront of a luxury jewelry shop named Diamontaire features an arched entrance, crystal chandeliers, and displays of necklaces in the windows.

Buying Guides

What to check before committing, and how to compare like with like.

Care and Maintenance

Cleaning diamonds safely at home, and what needs a professional.

A Look at the Cuts

Photographs of common diamond cuts and settings, here to illustrate the guides. Nothing shown on this site is for sale.

Start Here

If you’re new to this, begin with the 4Cs. It explains what the grades mean before you look at a single price tag.

Read the 4Cs Guide

Latest Guides

Every guide on the site, newest first.