You may have seen photographs seemingly floating inside a clear block of crystal and wondered how they get there. It isn’t a print, a sticker or an image placed behind the crystal. The picture is actually engraved inside the crystal itself, while the outside remains completely smooth and clear. The process is often called inner crystal engraving, subsurface engraving or 3D crystal engraving. So how does it work? A specialised laser is focused at precise points inside the crys
