It is a super calming stone and many people use it to relieve stress of all kinds. It makes an excellence antidote to insomnia due to an overactive mind.
The picture shows are the representative of what is being sold. The one you will be getting may not be the same pieces as displayed. The real colour of the item may be slightly different form the picture shown on website. This is due to factors such as brightness of the monitor or lighting condition when picture is taken. If no measurement or comparison indicator is shown or mentioned, the size is usually less than 5 by 5 cm.