This is a lovely soft blue-green Aquamarine Ruler. This means it energetically connects heart to throat making it easier to release, speak, think from the heart.
This crystal is considered a lower grade compared to the A+ specimens, hence the lower price. However, it still has a great natural shine and translucence.
I have found myself recently really connecting to aquamarine for the first time as a means of releasing that which Spirit says needs to go now!
It also helps me who has a family history of being judgmental become more tolerant. And customers have commented that they who were easily overwhelmed by their responsibilities became better at managing things. It also may alleviate allergies, hay fever, colds and bronchitis.
I sell aquamarine rulers like this to geological collectors as often as metaphysical buyers. Both group love them.