Do you need Apophyllite Pyramids? They are a cute size and good for grids or patterns on altars. Buy as many as you need. For crystal dreaming you would buy three to connect to Lemurian past life.
Use the crystal to soothe feelings of anxiety, fear, and worry. It promotes openness, frankness, helps overcome insecurity and openly show your real nature.
Dimensions are approximate. I will intuit which of there is best for you.