October - Opal, Tourmaline
IGS may receive customer referral fees from the companies listed in this page.
October
Opal
Tourmaline
Opals are in a class by themselves. As a species, opal is so unique its patterns have their own descriptive vocabulary. More than any other gem, each opal is distinctly individual. Opals are also the most delicate gemstones commonly worn and require special care.
- Symbolism
Perhaps due to their dynamic appearance, opals are associated with light and magic. As such, some credited opals with healing properties, especially for the eyes. Some believed that opals could even make the wearer invisible. While some cling to negative superstitions about opals, others wear them for good luck.
- Color
Some opals can display the phenomenon known as play-of-color, dazzling flashes of color that move as the stone is turned. Opals are the only gems that can show this effect, but not all opals do.
- Shop for...
Latest Articles
A Guide to Early Victorian Romantic Period Jewelry
Malaya or Malaia Garnet Value, Price, and Jewelry Information
Choosing Your First Gemstones: A Rough Guide for Faceters
Gemstone Coatings: CVD and 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!