Get 10% Off Your Order (Up to $25) | Use Code: WELCOME10 Shop Now

Diamond Guide

How to judge a diamond — testing, grading and reports — explained plainly and checked against GIA.

All Ring Guide Lab Grown Diamonds Diamond Guide Diamond Shapes Jewelry Guide

a jeweler's loupe resting beside a loose round diamond on soft linen

September 29, 2026

How to Tell if a Diamond Is Real (and Which Tests Actually Work)

Most home tests for a real diamond prove very little. Here's what each one can and can't tell you, according to GIA, and how to check a grading report yourself.

1–1 of 1