Opals are the traditional birthstone for June, while the modern birthstone is Tourmaline!
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. 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.
No other gem comes in as many colors, including multi-colors, as tourmaline, the modern October birthstone. Tourmalines enjoy worldwide popularity. Some people believe tourmalines have healing and stress relieving properties. Tourmalines have also been credited with boosting creativity and are favored by artists and writers.
(International Gem Society)