# The Double Diamond

**Track:** Design Thinking & Process — Design & Human-Centered Design — proposed (25)
**Framework / surface:** design
**Level:** Intermediate
**Prerequisites:** Introduction to Design Thinking

**In one line:** Discover, Define, Develop, Deliver — diverge then converge, twice.

## Theory, aesthetics & inspiration

The Double Diamond is the Design Council's (UK) 2005 map of how good design actually proceeds: two adjacent diamonds, each widening then narrowing. The first diamond is the problem space — Discover, then Define — where divergent thinking gathers evidence before convergent thinking frames the real question. The second is the solution space — Develop, then Deliver — diverging into many concepts, then converging on one to ship. Its discipline is refusing to solve before you understand. The Council's 2019 Framework for Innovation kept this rhythm but added four principles — put people first; communicate visually and inclusively; collaborate and co-create; and iterate, iterate, iterate — and remains widely taught across design and public-sector practice today.

## References

- [Double Diamond (design process model)](https://en.wikipedia.org/wiki/Double_Diamond_(design_process_model))
- [The Double Diamond — Design Council](https://www.designcouncil.org.uk/our-resources/the-double-diamond/)
- [The Double Diamond — Interaction Design Foundation](https://www.interaction-design.org/literature/topics/double-diamond)