Opal is the traditional birthstone for October.It is believed the stone was discovered in India and given the name "upala," or "precious stone" in Sanskrit, the Geological Institute of America ...

October has two birthstones: opal and tourmaline. Opal is the traditional birthstone for October. This gemstone is well-known for its "play-of-color," or ability to shift color.

"Opal is my birth stone, and it's one of my favorite stones, so I started doing it on wigs a long time ago," she said. "I actually did one for Lady Gaga, but we ended up not using it." The key to ...

Structural color! Opals are examples of natural photonic crystals. ... Microscopic view of an Opal Gemstone. Posted: December 4, 2024 | Last updated: March 21, 2025. Opals!