Sometimes it is difficult to see where the stone’s pavilion is
hitting the inside of the crown. To help in determining where the
stone touches the crown, dust the inside of the crown with powder.
Then, carefully place the stone in the crown and press down gently.
Carefully lift the stone from the crown and examine the pavilion.
Powder will remain on the stone at the points of contact with the
crown, allowing you to know where extra metal needs to be removed
before setting the stone. Brad Simon CMBJ www.BWSimon.com