Diamond is a prototype of a spatiotemporal search engine. It includes search functionalities based on machine transcription of ancient handwriting, iconographic search based on deep learning technology and a spatiotemporal interface for exploring the structure of cities in the past. This "might-work-some-of-the-time" prototype is intended to bootstrap a collective effort towards the building of an open-source, free and scalable search engine. It permits now to search through a couple of millions documents but this number is expected to hugely grow in the coming months, as part of the Time Machine project (http://timemachine.eu)