• LOGIN
  • MEMBERSHIP
  • Community
  • About
  • Advertise
  • Contact
  • Learning Center
    • Gemology
    • Jewelry and Lapidary
    • Gemstone Encyclopedia
  • Courses
    • IGS MembershipFor Professionals and Enthusiasts
    • Mini Courses
    • Professional Gemologist Certification
    • Diamond Specialist Certification
  • Prices & Buying Guides
    • Gem Price Guide
    • Gem Buying Guides
  • Diamond Buying Advice
    • Beginners Guide
    • Clarity
    • Color
    • Carats
    • Cut
    • The 5th C - Certification
    • Diamond Shapes
    • Choosing a Ring Style, Setting, and Metal
    • Diamond Sources
    • Cost Factors, Savings, and Financing
    • Deciding Where to Buy a Diamond
  • Gem-Related Businesses
    • View All Businesses
    • Appraisals
    • Auctions
    • Gem Cutting
    • Gem Treating
    • Gemological Laboratories
    • Gemology Supplies and Equipment
    • Gemstones
    • Informational Resources
    • Jewelry
    • Lapidary Supplies and Equipment
    • Rough Gems and Mineral Specimens
    • Special Services

Products

separator

Pursue Your Passion for Gemstones with the Ultimate Gem Resource

Start Your Gem Education
Articles

Latest Articles

Bloodstone Value, Price, and Jewelry Information

Also known as heliotrope, bloodstone is the traditional March birthstone. This dark green, opaque chalcedony with red to orange spots is a variety…

Does Homeowners Insurance Cover Gems and Jewelry?

Your homeowners insurance may cover gems and jewelry, but don’t assume it covers all risks or the value of your items. Ask your insurer these questions.…

Ametrine Value, Price, and Jewelry Information

Ametrine is a variety of quartz that displays bands of both amethyst purple and citrine yellow. These gems are typically cut to showcase their dramatic…

Is Uranium Glass Safe to Facet?

Uranium glass, or Vaseline glass, is a prized collector’s item and is generally safe to handle. But is it safe to facet? Learn about the potential…

Kämmererite Value, Price, and Jewelry Information

A beautiful but rare mineral, kämmererite is extraordinarily difficult to facet. As a result, the availability of cut gems is severely limited.…

Jewelry and Gemstone Appraisals for Insurance

Need insurance for your jewelry? You’ll need jewelry and gemstone appraisals. Learn what info they should include and who to trust with your…

Forum

Latest Forum Topics

Question on hybrid dopping
 17 hours ago
Malaya Garnet Turn Green Under UVB?
 3 days ago
Why is there rainbow color on the table of a gem?
 1 week ago
Hi are there any Pearl experts out there?
 1 week ago
Somaliland Opal
 1 week ago
Afganistan Diaspore
 2 weeks ago
Alaskan Jadeite
 2 weeks ago
How could you not call this spessartite a Fanta garnet?!?!?!?
 2 weeks ago
Mandarin garnet. What is that special trade name restricted to?Mandarin garnet. What is that special trade name restricted to?
 2 weeks ago
New to discussion
 2 weeks ago
Pricing for GIA certified gemstones
 2 weeks ago
Gemstone (Help identification)
 2 weeks ago
separator

Subscribe to the Free IGS

NEWSLETTER

Join our weekly newsletter & get a free copy of the Gem ID Checklist!

About

The International Gem Society (IGS) is the world's top resource for gem professionals, enthusiasts, and industry content. Learn more

Contact
  • Contact Us
  • Member Support
  • FAQ & Help
Want more gemology insights?

Learn how to get started with the International Gem Society’s guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!

SIGN ME UP

© 2021 International Gem Society LLC. All rights reserved.   Privacy Policy   |   Terms of Use   |   Affiliate Disclosure   |   Accessibility Statement

Ready to learn how to identify gems on your own?

Join our mailing list below to download a FREE gem ID checklist tutorial. See what’s inside…

  • Discover the 17 practical steps to gemstone identification (even if you’re just getting started with gemology)
  • Learn how you can use specific tools to gather data, make observations & arrive at an accurate ID
  • Explore a range of gemological tests… not only will you get familiar with the process but also time-saving shortcuts!

IGS Become Member

Join IGS today for great benefits!

  • Exclusive access to our premium articles and courses
  • Unlimited access to our gem pricing guide
  • Create your own listing in our business directory
  • Professional certification courses
  • Mini gemology courses
  • Participate in our member-only forums

Membership options