This is a very nice acrylic award - 3/4" thick makes for a good heft (a main reason glass is preferred is that it's heavier). As acrylics are laser engraved, the marking is much less expensive. Engraved from behind graphics and text have a depth and clarity very much like sand carving (which is much more expensive).
The answer here could be a long article but in general, a rotary engraving machine is driven by compressed air which pushes a diamond or carbide tip into…