2D vs 3D Crystal Engraving: What's the Difference?
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Shop for a photo crystal and you'll see “2D”, “2.5D” and “3D” engraving, often at quite different prices. They all use the same basic technology, but the result looks very different when you hold the crystal and turn it. Here's what each one means and which suits your photo.
How crystal engraving works
Photo crystals are made with subsurface laser engraving. A laser beam passes through the clear glass without harming it and is focused to a tiny point inside the block. At that point, the energy creates a microscopic fracture that shows as a white dot. The machine places thousands to millions of these dots, one by one, to build the image. Because everything happens inside the crystal, the surface stays perfectly smooth: the engraving can't be touched, scratched or worn away.
What is K9 crystal?
K9 is an optical-grade borosilicate glass, the same family of glass used for lenses and prisms. It is very clear, with no colour tint, and has few bubbles or inclusions, which is why it's the standard material for laser-engraved photo crystals. All Red Moose crystals are solid K9, polished on all sides.
2D engraving
A 2D engraving places the photo on a single flat plane inside the crystal, a bit like a photo printed on a sheet of glass. It can look clean and sharp from the front, but it has no depth: turn the crystal and the image simply gets thinner until it disappears edge-on. 2D works for text, logos and simple graphics.
2.5D engraving
2.5D stacks the flat image on several layers, or gives it a little relief, so it has some sense of depth. It's a step up from 2D, but faces still look like a flat photo with layers rather than a real head and shoulders.
3D engraving
A true 3D engraving starts by turning your photo into a 3D model: faces, hair and shoulders get real depth and volume. The laser then fills that model with points throughout the crystal's depth. As you move around it, the person seems to turn with you, and the portrait looks sculpted in light rather than printed. This is what we do for every Red Moose crystal.
2D vs 2.5D vs 3D at a glance
| 2D | 2.5D | 3D | |
|---|---|---|---|
| Depth | None, a single plane | Some, in layers | Full, a sculpted model |
| Looks best | Straight on | Straight on | From any angle |
| Best for | Text, logos | Simple photos | Portraits, people and pets |
| Preparation | Little | Some | Photo converted to a 3D model |
Why an LED base makes such a difference
The engraved points scatter light. With an LED light base underneath, light travels up through the crystal and every point glows, so the portrait stands out clearly, even in a dim room. It's the easiest way to show off a 3D engraving.
Which should you choose?
For a gift with a face in it, such as a partner, a child, a parent or a pet, choose 3D. The depth is what makes people pick it up and turn it in their hands. 2D is fine for a logo or a line of text.
Want to see the difference with your own photo? Add a 3D proof at checkout and we'll email you a preview before we engrave. Browse 3D photo crystals, all engraved to order in Langley, BC.