These are a lovely soft blue-green Aquamarine tumbles so energetically connects heart to throat making it easier to release, speak, think from the heart. Considered a lower grade hence the lower price. Larger tumbles look good in hemp necklaces. 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! You will get one of these in the photo I will intuit which is energetically best for your needs. Dimensions are of one of the stones.
This crystal assists you to be tolerant and less judgemental of other and of yourself. It invokes tolerance of others, gives support to those overwhelmed by responsibility.
If you want to wear an aquamarine tumble buy a large spiral to but it in although these will suit a hemp necklace. Like all tumbles, dimensions are a guide rather than actual.