skip to main content
  • 4Cs EDUCATION
    • 4Cs OF DIAMOND QUALITY
    • DIAMOND COLOR
    • WHAT IS DIAMOND CLARITY?
    • DIAMOND CUT
    • DIAMOND CARAT WEIGHT
  • DIAMOND BUYING GUIDE
    • HOW TO BUY A DIAMOND
    • SELECTING AN ENGAGEMENT RING
    • CARING FOR YOUR DIAMOND
    • INSURANCE AND APPRAISAL
    • WHERE DIAMONDS COME FROM
    • DIAMOND FLUORESCENCE
    • DIAMOND TREATMENTS
    • DIAMOND SIMULANTS
    • LABORATORY-GROWN DIAMONDS
  • GIA GRADING & REPORTS
    • GIA GRADING
    • WHY ASK FOR A GRADING REPORT?
    • HOW TO GET A GIA DIAMOND GRADING REPORT
    • GRADING THE 4Cs
    • DIAMOND GRADING REPORTS
    • DIAMOND ORIGIN REPORT
    • COLORED DIAMOND REPORTS
    • LGDR by GIA — Laboratory-Grown Diamond Reports
    • COLORED GEMSTONE AND PEARL REPORTS
  • ABOUT GIA
  • 4Cs BLOG

4Cs OF DIAMOND QUALITY

DIAMOND COLOR

WHAT IS DIAMOND CLARITY?

DIAMOND CUT

DIAMOND CARAT WEIGHT

New GIA Diamond Origin Report

Diamond Origin Report Service

HOW TO BUY A DIAMOND

GIA Diamond Reports

DIAMOND GRADING REPORTS

SELECTING AN ENGAGEMENT RING

CARING FOR YOUR DIAMOND

Latest Stories

Sorry No Post Found !

ABOUT GIA

GIA Headquarters in Carlsbad

The World’s Foremost Authority in Gemology™

Established in 1931, GIA protects the public through gemological research, education, impartial gem identification and grading services, and instrument development.

RELATED RESOURCES
  • Retailer Lookup
  • GIA Report Check
  • GIA Gem Encyclopedia
  • GIA Laboratory Services
  • GIA Education
  • Are you a retailer?
  • GIA.edu
GENERAL INFORMATION
  • Terms of Use
  • Copyrights and Trademarks
  • Privacy Policy
  • Contact Us
  • English
  • 簡体中文
  • 日本語

    Use of this site signifies your agreement to its terms of use. © 2002 - Gemological Institute of America inc.

    GIA is a nonprofit 501(c)(3) organization. All rights reserved.