Diamond Certifications Guide

New Collection:Shop the James Allen Collection at Blue Nile·Blue NileExplore Now →

Best Deals →

Learn

Best Retailers

Today's Deal

Charles & Colvard

Up to 40% Off
Moissanite Fine Jewelry

Shop the Sale

View all Moissanite guides →

415+ expert articles · Cited in People & Us Weekly

Education

Lab-Grown

Where to Buy

Today's Deal

Blue Nile Vault Sale

Up to 70% Off
Certified Diamonds

Shop the Vault

View all Diamond guides →

415+ expert articles · Cited in People & Us Weekly

By Stone

Buying Guides

Today's Deal

gemsNY

Up to 30% Off
Certified Natural Gemstones

Shop the Sale

Jewelry gift guides →

415+ expert articles · Cited in People & Us Weekly

Diamond Calculators

Moissanite & Pearl

Coupons & Deals

Today's Deal

Blue Nile Vault Sale

Up to 70% Off
Certified Diamonds

Shop the Vault

View all Calculators →

415+ expert articles · Cited in People & Us Weekly

Retailer Reviews

Comparisons

Today's Deal

Blue Nile Vault Sale

Up to 70% Off
Certified Diamonds

Shop the Vault

View all Reviews guides →

415+ expert articles · Cited in People & Us Weekly

Diamond Certifications Guide — Expert Guides & Reviews | Moissanite by Aurelia

What Are the Best Diamond Certifications? The Ultimate Guide

GSI Certification: Is It as Good as GIA? The Honest Truth

What Is EGL Certification vs. GIA, and Can It Be Trusted?

Ask Aurelia: What Does GIA Certified Mean? How This Certificate Protects You

IGI vs. GIA: A Jeweler Explains Which Diamond Certificate to Trust

HRD Diamond Certification: A Jeweler’s Honest Warning

Is the AGS Grading System a Smarter Choice Than GIA?

Ask Aurelia: Is GIA Certified Synthetic Diamonds Reliable?