Ruby Buying Guide
Our ruby buying guide can help you learn how rubies are graded, what to avoid, and how to identify a high quality stone or a bargain in the rough.
8 Minute Read
Related Articles
Ruby Value, Price, and Jewelry Information
One of the most popular traditional jewelry stones, ruby is exceptionally durable. The colors of the July birthstone — always...
Read More
What are Lab-Grown Sapphires?
Learn how lab grown sapphires are made and how gemologists can distinguish natural from synthetic sapphires.
Read More
How to Find Curved Striae in Synthetic Ruby and Sapphire
Curved striae or lines are a telltale sign of synthetic ruby and sapphire. If you're having trouble seeing them, here...
Read More
Ruby and Sapphire Origins
Ruby and sapphire origins greatly affect the values of these prized gems. Learn where these stones occur and how inclusions...
Read More
Latest Articles
Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
Read More
Red Gemstones: Ruby, Spinel, Garnet, and Other Great Picks for Jewelry
Red gemstones are popular choices for engagement rings and fine jewelry. The three most popular stones are ruby, garnet, and...
Read More
Jadeite Value, Price, and Jewelry Information
Explore jadeite gemstone value, learn the facts about jadeite vs jade, and discover how to identify quality jadeite jewelry.
Read More
Tips for Cutting and Polishing Halite
Halite is a very difficult material to facet, even for experts. Jeff Graham offers his advice on how to cut...
Read More
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get Gemology Insights
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!