Science, tools, identification, treatment, valuation & grading of gems

Mineralogy

Science, identification, classification, and testing of minerals

Jewelry & Lapidary

Gemstone jewelry settings, metals, tools, cutting & faceting stones

Gemstone Encyclopedia

List of all gemstones from A-Z with in-depth information for each

Gem Photo Gallery

Thousands of gem photos searchable by various properties.

Diamond Buying Advice

Everything you need to know about buying your perfect diamond

Birthstones

Learn more about these popular gemstones, their meaning & about buying birthstone jewelry

Gem Pricing

Gemstone Price Guides

Price guidance on over 70 types of gemstones

Expert Buying Guides

In-depth guides to quality factors of the 40 most popular gemstones

Courses

Overview
Mini Courses
Professional Gemologist Certification
Diamond Specialist Certification
Mineralogy Certification
Gem Junior Online Course

Community

Gem Businesses

View All
Appraisals
Auctions
Gem Cutting
Gem Treating
Gemological Laboratories
Gemology Supplies & Equipment
Gemstones
Informational Resources
Jewelry
Lapidary Supplies & Equipment
Rough Gems & Mineral Specimens

About

About IGS
Advertise
Contact Us
FAQ
Support
Press

Home Photos Zircon Photos & ImagesYellow Birefringence Zircon Faceted

Before

Yellow Birefringence Zircon Faceted

Before

Article: Before and After: Pictures of Repaired and Recut Gems

Gemstone	Zircon
Natural or man made	Natural
Gem State	Faceted
Color	Yellow
Transparency	Transparent
Photo phenomena	Birefringence

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

support@gemsociety.org

Learning Center

Gemology

Mineralogy

Gemstone Encyclopedia

Jewelry & Lapidary

Diamond Buying Advice

Professional Gemologist Certification

Diamond Specialist Certification

Mineralogy Certification

Gem Junior Online Course

Privacy PolicyTerms of UseAffiliate DisclosureAccessibility Statement