This is the piece that you will receive.  42mm x 36.3mm x 11.5mm. 

This is a stone of calm, trust, and acceptance. It has a strong relaxing, balancing and calming effect. It brings hope in dark times by lending a sense of balance and calm.

• Helps you with transitions with trust that everything will ultimately turn out for the best.
• Can be used for dreamwork and is also good for dream recall. 
• It is a protective stone that brings success in business or career
• Helps to strengthen the immune system and relieves allergies.
• Said to be good for exhaustion and is also excellent for stress and depression, stopping you having obsessive thoughts, bringing in a gentle balanced energy.