I love this stone it is a supportive goddess energy stone , that will inspire verbal expression.
Its said to Spiritually join the heart and throat chakras and instills a sense of wonder at the beauty of the earth. 
It's very much a grounding stone and is particularly helpful for emotional healing with matters of the heart. 
It is also said that it aids in removing toxins and blockages created from events in current or previous lives, facilitating speaking about and release from past hurts. Bringing about acceptance and inner reconciliation. 
Approx 3cm 
 @ The Crystal Buddha