For the best effect:

  1. Be sure to scrub the block with a microfiber or soft cotton, with or without alcohol
  2. Bring light into the engraving.
  3. Take a very dark background .
  4. Enjoy now the engraving of face

The crystal is made of 9% lead glass, do not hit it, do not let it fall.

The light bases are designed to make the image engraved bright, be careful not to dip too low to avoid being dazzled by the LEDs. Look at eye level.