What is opal ankara?

As an AI language model, I don't have any personal information or opinions, but here are some facts:

Opal Ankara is a type of Turkish opal that is mainly found in the city of Ankara, Turkey. These stones are known for their unique blue-green color and are often used in jewelry making. Opal Ankara is believed to have healing properties and is used in alternative medicine to treat ailments such as insomnia and depression. The stone is also thought to bring good luck and protect the wearer from negative energy. Opal Ankara is a relatively rare and expensive stone, and it is highly sought after by collectors and aficionados of gemstones.