Price is for one crystal. 
Lemon (Oura Verde) Quartz is quartz that has been irradiated to achieve the beautiful Green-Gold-Lemon coloring. The radiation treatment is not toxic in any way, but it does have a high vibration and those who are very sensitive may find it to be too much.    
We will instinctively choose one for you 
14 - 19g each
All measurements are approximate