They would grow in size but maintain their shape. 2.3 Gently heat and stir in 50g of bluestone. 2.4 Add a seed crystal and allow to cool to room temperature. 2.5 Cover it up with plastic wrap. 2.6 Observe every day and record shape, size and mass of the crystal.
Crystals keep their same shape as they grow but growth rate slows down as the size increases.