Oregon Sunstone Buying Guide
Our Oregon sunstone buying guide can help you learn how these gems are graded and how to identify a high quality stone or a bargain in the rough.
4 Minute Read
Related Articles
Oregon Sunstone Value, Price, and Jewelry Information
While feldspar sunstones from sources around the world have been used for carvings and cabochons, Oregon sunstone material has proven...
Read More
Quahog Pearl Buying Guide
Your next plate of steamed clams might hold a rare quahog pearl. Learn how to judge the quality of these...
Read More
Melo Pearl Buying Guide
Bright orange colors and flames that seem to dance across the surface make the melo pearl a fascinating gem choice....
Read More
Tridacna Pearl Buying Guide
Clam pearls can grow to be some of the largest in the world. Learn more about these aquatic gems and...
Read More
Latest Articles
Identifying Synthetic Gems
Distinguishing between natural and synthetic gems is a critical skill for gemologists. Learn about gem making processes and the telltale...
Read More
Ten Big, Beautiful, and Affordable Engagement Ring Stones
Looking for a gem that will make a big impression on your finger, not your wallet? These ten gems make...
Read More
Rhodochrosite Value, Price, and Jewelry Information
Beautiful rose red to pink rhodochrosite crystals are popular with mineral collectors. Although very soft, opaque stones have been fashioned...
Read More
Ruby and Sapphire Survey: Where Do You Draw the Line?
Our survey asked for your input on the age-old question: where is the line between ruby and sapphire? The results...
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!