All Egg Shaped crystals have their unique way of being applied while in a healing session. 
When Held sideways between the thumb and forefinger it can be used to scan the auric field of the body. 
Pointing the smaller end part on to a single point on the body;   can be used for Reflexology, Zone Pressure, Acupressure, and Shiatsu. 
Place it in your preferred hand and over the body and begin to scan from head to toe. You will be able o pick up Blockages, grey areas, coldness, and resistance. Once you have found and noted affected regions; you place the egg-shaped crystal onto the area and begin to turn in a counter-clockwise motion to dispel the affected grey areas. Relieving the blockages and releasing the resistances. 
If you feel heat or tingly, this area is clear.